Capacitor $1($C$1)$ has a capacitance of $2\mathrm{.}2$ F with a vacuum between the plates and the area of the plates of C$1$ is $7\mathrm{.}8$ cm$2.$ Capacitor $2($C$2)$ has a plate area of $2$ cm$2$ and a capacitance of $4\mathrm{.}4$ F when empty. If d$1$ is the separation of the plates of C$1$ and d$2$ is the separation of the plates of C$2,$ what is the ratio d$1/$d$2?$