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Finding the Fourth Proportional to 1,369.29, 1,891.17 and 1,092.54

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Solution

The fourth proportional to 1,369.29, 1,891.17 and 1,092.54 is: 1,508.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.29 : 1,891.17 = 1,092.54 : x
  2. Step 2: Convert to fraction form
    1,369.29/1,891.17 = 1,092.54/x
  3. Step 3: Cross multiply
    1,369.29x = 1,891.17 × 1,092.54
  4. Step 4: Simplify right side
    1,369.29x = 2,066,178.87
  5. Step 5: Solve for x
    x = 2,066,178.87/1,369.29
  6. Step 6: Final answer
    x = 1,508.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.