Home / 5,691.38-8,538.51-1,587.38

Finding the Fourth Proportional to 5,691.38, 8,538.51 and 1,587.38

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Solution

The fourth proportional to 5,691.38, 8,538.51 and 1,587.38 is: 2,381.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,691.38 : 8,538.51 = 1,587.38 : x
  2. Step 2: Convert to fraction form
    5,691.38/8,538.51 = 1,587.38/x
  3. Step 3: Cross multiply
    5,691.38x = 8,538.51 × 1,587.38
  4. Step 4: Simplify right side
    5,691.38x = 13,553,817.31
  5. Step 5: Solve for x
    x = 13,553,817.31/5,691.38
  6. Step 6: Final answer
    x = 2,381.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.