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Finding the Fourth Proportional to 8,372.87, 12,558.69 and 3,375.57

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Solution

The fourth proportional to 8,372.87, 12,558.69 and 3,375.57 is: 5,063.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,372.87 : 12,558.69 = 3,375.57 : x
  2. Step 2: Convert to fraction form
    8,372.87/12,558.69 = 3,375.57/x
  3. Step 3: Cross multiply
    8,372.87x = 12,558.69 × 3,375.57
  4. Step 4: Simplify right side
    8,372.87x = 42,392,737.20
  5. Step 5: Solve for x
    x = 42,392,737.20/8,372.87
  6. Step 6: Final answer
    x = 5,063.11

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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.