Determine if the following are in proportion

(a) 4,6,8,12

(b) 33,121,9,96

Solution:

(a) 4,6,8,12
$\frac{4}{6} = \frac{8}{12}$ is true so 4, 6, 8, 12 are in proportion.

(b) 33,121,9,96
$\frac{33}{121} = \frac{3}{11}$
$\frac{9}{96} = \frac{3}{32}$
So $\frac{33}{121} ≠ \frac{9}{96}$

So 33, 121, 9, 96 are NOT in proportion.

Updated on: 10-Oct-2022

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