Question

If the first, third and fourth numbers in proportion are 8, 3 and 6 then the second number will be

a) 4
b) 10
c) 16
d) 24


if you are 100% sure the answer the questions​

Answer 1

If the first, third and fourth numbers in proportion are 8, 3 and 6 then the second number will be

answer is 16

Answer 2

$Let \: 2nd \: proportion \: be \: x$

$8 \: : x: : 3: 9$

$\frac{8}{x} = \frac{3}{9}$

$8 \times 9 = 3 \times x$

$72 = 3x$

$x = \frac{72}{3}$

$x = 24$