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Finding the Fourth Proportional to 8,601.52, 12,910.20 and 5,321.02

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Solution

The fourth proportional to 8,601.52, 12,910.20 and 5,321.02 is: 7,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.52 : 12,910.20 = 5,321.02 : x
  2. Step 2: Convert to fraction form
    8,601.52/12,910.20 = 5,321.02/x
  3. Step 3: Cross multiply
    8,601.52x = 12,910.20 × 5,321.02
  4. Step 4: Simplify right side
    8,601.52x = 68,695,432.40
  5. Step 5: Solve for x
    x = 68,695,432.40/8,601.52
  6. Step 6: Final answer
    x = 7,986.43

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1.5x scale

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.