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Finding the Fourth Proportional to 7,472.79, 11,209.08 and 2,545.86

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Solution

The fourth proportional to 7,472.79, 11,209.08 and 2,545.86 is: 3,818.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,472.79 : 11,209.08 = 2,545.86 : x
  2. Step 2: Convert to fraction form
    7,472.79/11,209.08 = 2,545.86/x
  3. Step 3: Cross multiply
    7,472.79x = 11,209.08 × 2,545.86
  4. Step 4: Simplify right side
    7,472.79x = 28,536,799.99
  5. Step 5: Solve for x
    x = 28,536,799.99/7,472.79
  6. Step 6: Final answer
    x = 3,818.76

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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.