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Finding the Fourth Proportional to 8,634.52, 12,937.20 and 6,899.50

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Solution

The fourth proportional to 8,634.52, 12,937.20 and 6,899.50 is: 10,337.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.52 : 12,937.20 = 6,899.50 : x
  2. Step 2: Convert to fraction form
    8,634.52/12,937.20 = 6,899.50/x
  3. Step 3: Cross multiply
    8,634.52x = 12,937.20 × 6,899.50
  4. Step 4: Simplify right side
    8,634.52x = 89,260,211.40
  5. Step 5: Solve for x
    x = 89,260,211.40/8,634.52
  6. Step 6: Final answer
    x = 10,337.60

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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.