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Finding the Fourth Proportional to 8,379.52, 12,569.29 and 3,445.71

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Solution

The fourth proportional to 8,379.52, 12,569.29 and 3,445.71 is: 5,168.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.52 : 12,569.29 = 3,445.71 : x
  2. Step 2: Convert to fraction form
    8,379.52/12,569.29 = 3,445.71/x
  3. Step 3: Cross multiply
    8,379.52x = 12,569.29 × 3,445.71
  4. Step 4: Simplify right side
    8,379.52x = 43,310,128.25
  5. Step 5: Solve for x
    x = 43,310,128.25/8,379.52
  6. Step 6: Final answer
    x = 5,168.57

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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.