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Finding the Fourth Proportional to 8,877.53, 12,213.24 and 8,631.50

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Solution

The fourth proportional to 8,877.53, 12,213.24 and 8,631.50 is: 11,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,877.53 : 12,213.24 = 8,631.50 : x
  2. Step 2: Convert to fraction form
    8,877.53/12,213.24 = 8,631.50/x
  3. Step 3: Cross multiply
    8,877.53x = 12,213.24 × 8,631.50
  4. Step 4: Simplify right side
    8,877.53x = 105,418,519.99
  5. Step 5: Solve for x
    x = 105,418,519.99/8,877.53
  6. Step 6: Final answer
    x = 11,874.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.