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Finding the Fourth Proportional to 8,915.59, 13,369.24 and 3,985.26

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Solution

The fourth proportional to 8,915.59, 13,369.24 and 3,985.26 is: 5,976.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.59 : 13,369.24 = 3,985.26 : x
  2. Step 2: Convert to fraction form
    8,915.59/13,369.24 = 3,985.26/x
  3. Step 3: Cross multiply
    8,915.59x = 13,369.24 × 3,985.26
  4. Step 4: Simplify right side
    8,915.59x = 53,279,897.40
  5. Step 5: Solve for x
    x = 53,279,897.40/8,915.59
  6. Step 6: Final answer
    x = 5,976.04

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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.