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Finding the Fourth Proportional to 8,624.64, 12,925.26 and 3,938.85

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Solution

The fourth proportional to 8,624.64, 12,925.26 and 3,938.85 is: 5,902.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.64 : 12,925.26 = 3,938.85 : x
  2. Step 2: Convert to fraction form
    8,624.64/12,925.26 = 3,938.85/x
  3. Step 3: Cross multiply
    8,624.64x = 12,925.26 × 3,938.85
  4. Step 4: Simplify right side
    8,624.64x = 50,910,595.72
  5. Step 5: Solve for x
    x = 50,910,595.72/8,624.64
  6. Step 6: Final answer
    x = 5,902.93

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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.