Home / 8,278.18-11,428.13-6,385.52

Finding the Fourth Proportional to 8,278.18, 11,428.13 and 6,385.52

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Solution

The fourth proportional to 8,278.18, 11,428.13 and 6,385.52 is: 8,815.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,278.18 : 11,428.13 = 6,385.52 : x
  2. Step 2: Convert to fraction form
    8,278.18/11,428.13 = 6,385.52/x
  3. Step 3: Cross multiply
    8,278.18x = 11,428.13 × 6,385.52
  4. Step 4: Simplify right side
    8,278.18x = 72,974,488.03
  5. Step 5: Solve for x
    x = 72,974,488.03/8,278.18
  6. Step 6: Final answer
    x = 8,815.28

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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.