Question

find the value of x for the proportion 16:8::7:x​

Answer 1

Answer:

x = 3.5

Step-by-step explanation:

Product of means = product of extremes

means are 8, 7

extremes are 16, x

∴ product of means = 8 × 7

product of extremes = 16 × x = 16x

∴ 16x = 8 × 7

⇒ $x=\frac{8*7}{16} = \frac{1 * 7}{2}$

= 7/2 = 3.5

Answer 2

Means are 8,7

Extremes are 16,x

Product of means= 8*7

Product of extremes= 16*x

Product of extremes

16x=8*7

x=7*8/16

7/2= 3.5

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