[tex]\displaystyle{ mp = \frac{\sqrt{3} \cdot 1 + \sqrt{12} \cdot 3}{1+3} }[/tex]
[tex]\displaystyle{ mp = \frac{\sqrt{3} + 3\sqrt{12}}{4} }[/tex]
[tex]\displaystyle{ mp = \frac{\sqrt{3} + 3 \cdot 2\sqrt{3}}{4} }[/tex]
[tex]\displaystyle{ mp = \frac{\sqrt{3} + 6\sqrt{3}}{4} }[/tex]
[tex]\displaystyle{ mp = \frac{7}{4}\sqrt{3} }[/tex]
