Question

Verify that the following numbers are in proportion
12, 18, 40, 60​

Answer 1

12/18 = 2/3

40/60 = 2/3

Since, 12/18 = 40/60.

.•. 12,18,40,60 are in proportion...

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Alternative method:

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12*60 = 720

18*40 = 720

Since, product of mean = product of extreme

.•. 12,18,40,60 are in proportion..

Hope it helps you...

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Answer 2

Answer:

1

Step-by-step explanation:

12:18::40:60

hence 12×60=18×40=1