Answer
$x = 3.2$
$x = 3\frac{1}{5}$
Work Step by Step
$\frac{8.8}{1.1} = \frac{x}{0.4}$
$1.1x = (8.8)(0.4)$
$1.1x = 3.52$
$\frac{1.1x}{1.1} = \frac{3.52}{1.1}$
$x = 3.2$
$\frac{8\frac{4}{5}}{1\frac{1}{10}} = \frac{x}{\frac{4}{10}}$
$(1\frac{1}{10})(x) = (8\frac{4}{5})(\frac{4}{10})$
$(\frac{11}{10})(x) = (\frac{44}{5})(\frac{4}{10})$
$(\frac{11}{10})(\frac{10}{11})(x) = (\frac{44}{5})(\frac{4}{10})(\frac{10}{11})$
$(\frac{11\div11}{10\div10})(\frac{10\div10}{11\div11})(x) = (\frac{44\div11}{5})(\frac{4}{10\div10})(\frac{10\div10}{11\div11})$
$x = \frac{16}{5}$
$x = 3\frac{1}{5}$