Question

The fourth proportional to 4 6 8 is a) 12 b) 32 c) 48 d) None of these step by step please​

Answer 1

$let \: the \: fourth \: propotion \: be \:x \\ 4:6 : : 8 : x \\ 4 \times x = 8 \times 6 \\ x = \frac{8 \times 6}{4} = 12$