Question

Find the value of x in the following proportions:
(a) x: 12::6:8​

Answer 1

Answer:

$x : 12 : : 6 : 8 \\ \\ = 8x = 12 \times 6 \\ \\ x = \frac{12 \times 6}{8} \\ \\ x = \frac{3 \times 6}{4} \\ \\ x = \frac{3 \times 3}{2} \\ \\ x = \frac{9}{2}$

Answer 2

Answer:

$x : 12 : : 6 : 8 \\ \\ = 8 \times x = 12 \times 6 \\ \\ x = \frac{12 \times 6}{8} \\ \\ x = \frac{3 \times 6}{2} \\ \\ x = \frac{18}{2} \\ \\ x = 9$