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Finding the Fourth Proportional to 5,251.88, 7,249.46 and 4,691.38

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Solution

The fourth proportional to 5,251.88, 7,249.46 and 4,691.38 is: 6,475.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.88 : 7,249.46 = 4,691.38 : x
  2. Step 2: Convert to fraction form
    5,251.88/7,249.46 = 4,691.38/x
  3. Step 3: Cross multiply
    5,251.88x = 7,249.46 × 4,691.38
  4. Step 4: Simplify right side
    5,251.88x = 34,009,930.07
  5. Step 5: Solve for x
    x = 34,009,930.07/5,251.88
  6. Step 6: Final answer
    x = 6,475.76

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1.5x scale

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.