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Finding the Fourth Proportional to 8,909.65, 13,364.19 and 3,715.39

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Solution

The fourth proportional to 8,909.65, 13,364.19 and 3,715.39 is: 5,572.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.65 : 13,364.19 = 3,715.39 : x
  2. Step 2: Convert to fraction form
    8,909.65/13,364.19 = 3,715.39/x
  3. Step 3: Cross multiply
    8,909.65x = 13,364.19 × 3,715.39
  4. Step 4: Simplify right side
    8,909.65x = 49,653,177.88
  5. Step 5: Solve for x
    x = 49,653,177.88/8,909.65
  6. Step 6: Final answer
    x = 5,572.97

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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.