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Question
If x : y = 2 : 3, and y : z = 4 : 7, find x : y : z
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Solution
LCM of y's terms 3 and 4 = 12
Making equals of y as 12
`x/y = (2)/(3) = (2 xx 4)/(3 xx 4) = (8)/(12)` or 8 : 12
`y/z = (4)/(7) xx (3)/(3) = (12)/(21)` or 12 : 21
Then x : y : z = 8 : 12 : 21.
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