The financial statements analysis made using selected instruments is extremely important for obtaining the necessary information about business operations of the observed company. The most important instrument for financial statements analysis is financial ratio. Ratios which provide information about the entire business of the company are called synthetic ratios. The subject of this paper is the role of synthetic ratios in financial statements analysis on the example of selected companies in manufacturing industry. Synthetic ratios determine the financial stability of the observed company. The objectives of this paper are to point out the importance of synthetic ratios and to investigate whether the selected ratios lead to the same conclusion about the “financial health” of selected companies. The methods used in this paper are methods of analysis, induction, deduction, comparison and description. The synthetic ratios used in the analysis are Z-score, Kralicek DF ratio and BEX index. The analysis of selected ratios led to several conclusions. Due to certain oscillations that can occur in a one year period, the ratios should be calculated for a longer period of time in order to reach more credible conclusions. Also, the ratios made for a specific area in which the company operates give a more accurate picture of the company’s business. The Z-score, which was made for companies in US area, does not give a clear picture of company’s business operations, while Kralicek DF ratio and BEX index provide a better insight into the business. Selected ratios have the same trend in values movement over the year, so it can be concluded that they lead to the same conclusion about the “financial health” of the observed company, taking into account the geographical area for which they were made.