Multi-scroll chaotic system has found important applications as broadband signal generator and true pseudorandom number generator for communication engineering. In this paper, an active control method is proposed to projective-synchronize two n-scroll chaotic Jerk systems. The proposed technique is applied to achieve generalized projective synchronization for the chaotic system, where all state variables are in a proportional way. This characteristic allows us to direct the scaling factor arbitrarily onto a desired value. Feasibility of the proposed control scheme is illustrated through the numerical examples.