The ultrasonic velocity, density, viscosity have been measured for ternary liquid mixtures containing 4-methyl anisole and 2-Propanol in n-hexane as solvent at 303K, 308K and 313K. The various acoustic parameters like adiabatic compressibility, free length, free volume, internal pressure, acoustic impedance, formation constant values have been calculated from the experimental data. In addition to that excess values of certain above parameters are also evaluated. These parameters are used to discuss the presence of significant molecular interaction between the components of ternary liquid mixtures.