Question

Given that 4x:9 = 7:3, calculate the value of x

Answer 1

Answer:

$\rm4x \ratio \: 9 = 7 \ratio \: 3 \\ \ \\ \implies \rm\frac{4x}{9} = \frac{7}{3} \\ \\ \implies \: \frac{4x \times 3}{7 \times 9} \\ \\ = \cancel\frac{12x}{63} \\ \\ x = \frac{4}{21} \\ \\ \rm \: hence \: in \: ratio \: = \: 4\ratio21$