Home / 8,278.40-12,419.14-2,732.13

Finding the Fourth Proportional to 8,278.40, 12,419.14 and 2,732.13

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Solution

The fourth proportional to 8,278.40, 12,419.14 and 2,732.13 is: 4,098.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.40 : 12,419.14 = 2,732.13 : x
  2. Step 2: Convert to fraction form
    8,278.40/12,419.14 = 2,732.13/x
  3. Step 3: Cross multiply
    8,278.40x = 12,419.14 × 2,732.13
  4. Step 4: Simplify right side
    8,278.40x = 33,930,704.97
  5. Step 5: Solve for x
    x = 33,930,704.97/8,278.40
  6. Step 6: Final answer
    x = 4,098.70

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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.