Answer
$c = 1.8$
Work Step by Step
Before we can solve this proportion, let's rewrite it in a more conventional way as two equal ratios:
$\dfrac{2.4}{c} = \dfrac{4}{3}$
To solve a proportion, we use the cross products property, multiplying the numerator of one ratio with the denominator of the other ratio, and vice versa:
$2.4(3) = 4c$
Multiply on the left side of the equation:
$7.2 = 4c$
Divide each side of the equation by $4$ to solve for $c$:
$c = 1.8$