Final answer:
Financial ratios are vital tools for assessing a company's financial characteristics, and statement 4 is true as it underscores the importance of trend comparison with industry averages.
Step-by-step explanation:
The question pertains to the usefulness of financial ratios in evaluating the financial health of a company. Financial ratios are indeed critical tools that help users of financial statements to understand a company's financial characteristics by expressing large dollar amounts in relative terms, facilitating company-to-company comparisons.
Statement 4 is correct because it emphasizes the importance of comparing a company's financial ratio trends to industry averages over time, which provides a more meaningful analysis of the company's performance.