A simple method to predict the concentrations of homogeneous ternary mixtures by measuring two of their physical properties is presented. The method, which may be constructed by using a suitable graphical tool or software, can be used in chemical analysis of ternary aqueous solutions, for example. In order to validate the suggested method, four application examples are presented for different solution systems using available literature data of different physical properties. The method, which is found to be precise, may reduce the need for analytical measurements by replacing them with graphical methods. (c) 2010 Elsevier Ltd. All rights reserved.