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Finding the Fourth Proportional to 8,605.53, 12,910.19 and 3,411.27

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Solution

The fourth proportional to 8,605.53, 12,910.19 and 3,411.27 is: 5,117.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.53 : 12,910.19 = 3,411.27 : x
  2. Step 2: Convert to fraction form
    8,605.53/12,910.19 = 3,411.27/x
  3. Step 3: Cross multiply
    8,605.53x = 12,910.19 × 3,411.27
  4. Step 4: Simplify right side
    8,605.53x = 44,040,126.78
  5. Step 5: Solve for x
    x = 44,040,126.78/8,605.53
  6. Step 6: Final answer
    x = 5,117.65

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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.