The vector \(\begin{pmatrix} 4 \\ -7 \end{pmatrix}\) is orthogonal to the vector \(\begin{pmatrix} 3 \\ k \end{pmatrix}\). The vector \(\begin{pmatrix} 2 \\ m \end{pmatrix}\) is orthogonal to the vector \(\begin{pmatrix} 3 \\ k \end{pmatrix}\). Find m .
