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Finding the Fourth Proportional to 3,972.52, 5,507.19 and 3,761.87

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Solution

The fourth proportional to 3,972.52, 5,507.19 and 3,761.87 is: 5,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.52 : 5,507.19 = 3,761.87 : x
  2. Step 2: Convert to fraction form
    3,972.52/5,507.19 = 3,761.87/x
  3. Step 3: Cross multiply
    3,972.52x = 5,507.19 × 3,761.87
  4. Step 4: Simplify right side
    3,972.52x = 20,717,315.64
  5. Step 5: Solve for x
    x = 20,717,315.64/3,972.52
  6. Step 6: Final answer
    x = 5,215.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.