A solid block of uniform density, Block 1, has mass \(M\) and volume \(V\) and floats at rest in an unknown fluid with \(60\%\) of its volume submerged beneath the fluid's surface. A second solid block of uniform density, Block 2, has mass \(2M\) and volume \(3V\). When placed in the same fluid, Block 2 also floats at rest. What is the ratio of the density of Block 2 to the density of the fluid, \(\dfrac{\rho_2}{\rho_{\text{fluid}}}\)?