Question

verify that the number 12, 18,40 , 60 are in proportion​

Answer 1

• 12 = 1/12
• 18 = 1/18
• 40 = 1/40
• 60 = 1/60

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Answer 2

Step-by-step explanation:

12/18 = 2/3

40/60 = 2/3

Since, 12/18 = 40/60.

.•. 12,18,40,60 are in proportion.

Alternative method:

12*60 = 720

18*40 = 720

Since, product of mean = product of extreme

.•. 12,18,40,60 are in proportion..

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