3/2

perfect fifth.png

JI Glyph of 3/2

3/2 |-1 1>

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File:Jid 3 2 pluck adu dr220.mp3 sound sample

3/2 is the frequency ratio of the Just Perfect Fifth. What tunes it well, is one of variants of 12edo or 17edo (such as 24edo, 34edo and 36edo). Other edos tune it well too (5, 7, 29, 41, 53, 200). But not all edos are like this. 35edo is great for 2, 5, 7, 9, 11 and 17 but fails on 3 as it's forced to use the 7edo or 5edo approximation.