A force of $- P \hat { k }$ acts on the origin of the coordinate system. The torque about the point $( 2 , - 3 )$ is $P ( a \hat { i } + b \hat { j } )$ , The ratio of $\frac { a } { b }$ is $\frac { x } { 2 }$. The value of $x$ is
A force of $- P \hat { k }$ acts on the origin of the coordinate system. The torque about the point $( 2 , - 3 )$ is $P ( a \hat { i } + b \hat { j } )$ , The ratio of $\frac { a } { b }$ is $\frac { x } { 2 }$. The value of $x$ is