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Finding the Fourth Proportional to 8,603.52, 12,913.20 and 5,323.02

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Solution

The fourth proportional to 8,603.52, 12,913.20 and 5,323.02 is: 7,989.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,603.52 : 12,913.20 = 5,323.02 : x
  2. Step 2: Convert to fraction form
    8,603.52/12,913.20 = 5,323.02/x
  3. Step 3: Cross multiply
    8,603.52x = 12,913.20 × 5,323.02
  4. Step 4: Simplify right side
    8,603.52x = 68,737,221.86
  5. Step 5: Solve for x
    x = 68,737,221.86/8,603.52
  6. Step 6: Final answer
    x = 7,989.43

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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.