Perfect fourth - Revision history

Vector at 06:40, 12 April 2026

2026-04-12T06:40:30Z

← Older revision		Revision as of 06:40, 12 April 2026
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	The '''perfect fourth''' is the octave complement of the [[perfect fifth]]. It generally has a frequency ratio of '''4/3''', and is 498.0 cents in size when justly tuned.		The '''perfect fourth''' is the octave complement of the [[perfect fifth]]. It generally has a frequency ratio of '''4/3''', and is 498.0 cents in size when justly tuned.

	While it has a relatively simple ratio (and can thus be used as a consonance especially in Pythagorean theory or as a harmonic interval), in classical theory, the perfect fourth above the root is often treated as a dissonance to resolve down to the major third.		While it has a relatively simple ratio (and can thus be used as a consonance especially in Pythagorean theory or as a harmonic interval), in classical theory<sup>[which classical theory?]</sup>, the perfect fourth above the root is often treated as a dissonance to resolve down to the major third.

Vector at 06:40, 12 April 2026

2026-04-12T06:40:13Z

← Older revision		Revision as of 06:40, 12 April 2026
Line 2:		Line 2:
	The '''perfect fourth''' is the octave complement of the [[perfect fifth]]. It generally has a frequency ratio of '''4/3''', and is 498.0 cents in size when justly tuned.		The '''perfect fourth''' is the octave complement of the [[perfect fifth]]. It generally has a frequency ratio of '''4/3''', and is 498.0 cents in size when justly tuned.

	While it has a relatively simple ratio, in classical theory, the perfect fourth above the root is often treated as a dissonance to resolve down to the major third.		While it has a relatively simple ratio (and can thus be used as a consonance especially in Pythagorean theory or as a harmonic interval), in classical theory, the perfect fourth above the root is often treated as a dissonance to resolve down to the major third.

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2026-04-12T05:03:48Z

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The '''perfect fourth''' is the octave complement of the [[perfect fifth]]. It generally has a frequency ratio of '''4/3''', and is 498.0 cents in size when justly tuned.

While it has a relatively simple ratio, in classical theory, the perfect fourth above the root is often treated as a dissonance to resolve down to the major third.