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2016-02-09T02:05:13+08:00

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Find whole number ratios that are equivalent to 36 : 42

We can simplify 36 : 42

36 ÷ 6 = 6
42 ÷ 6 = 7  

So, 36:42 = 6:7

To check: the cross products must be equal.
a:b = c:d where ad = bc
a = 36; b = 42 ; c = 6 ; d = 7

36*7 = 42*6
252 = 252  both ratios are proportional.

36 x 2 = 72
42 x 2 = 84

So, 36:42 = 72:84

36*84 = 42*72
3024 = 3024 ratios are proportional
  
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