Question

find the fourth proportional to 2 1/2, 2 6/7 ,3 1/2​

Answer 1

Answer:

The required number is 4.

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Step-by-step explanation:

2 1/2:2 6/7 :: 3 1/2: x. (let)

=>5/2:20/7::7/2:x

=>(5/2)x= 10. { Product of extremes= Product of means}

=> x= 4

Answer 2

Answer:

4 is the answer

Step-by-step explanation:

2 ½ : 2 ⁶/⁷ : : 3 ½ : x

⁵/² : ²⁰/⁷ : : ⁷/² : x

=> (⁵/²)x = 10

[product of extreme:product of mean]

x=4

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