Chapter 6 - Section 6.3 - Proportions and Problem Solving - Exercise Set - Page 438: 54

$ x = \frac{11}{5}$ml or $2.2$mL

$\frac{15}{1} = \frac{33}{x}$ Multiply both sides by x $15x = 33$ Divide both sides by 15 $x = \frac{33}{15}$ Simplify the fraction $x = \frac{11}{5}$ or $2.2$ Don't forget to add the units $ x = \frac{11}{5}$ml or $2.2$mL