Question

check 3:4 and 9:12 are in proportion or not​

Answer 1

Answer:

We know that product of extremes is equal to the product of means. So, if the L.H.S is equal to the R.H.S then the ratios are in proportion.

⇒ 3:4 = 9:12

⇒ 3 × 12 = 4 × 9

⇒ 36 = 36

∴ Over here, the L.H.S is equal to the R.H.S, so 3:4 and 9:12 are in proportion.

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