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Finding the Fourth Proportional to 8,472.78, 12,711.18 and 2,926.17

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Solution

The fourth proportional to 8,472.78, 12,711.18 and 2,926.17 is: 4,389.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.78 : 12,711.18 = 2,926.17 : x
  2. Step 2: Convert to fraction form
    8,472.78/12,711.18 = 2,926.17/x
  3. Step 3: Cross multiply
    8,472.78x = 12,711.18 × 2,926.17
  4. Step 4: Simplify right side
    8,472.78x = 37,194,995.39
  5. Step 5: Solve for x
    x = 37,194,995.39/8,472.78
  6. Step 6: Final answer
    x = 4,389.94

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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.