Home / 8,338.38-12,498.57-5,418.78

Finding the Fourth Proportional to 8,338.38, 12,498.57 and 5,418.78

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Solution

The fourth proportional to 8,338.38, 12,498.57 and 5,418.78 is: 8,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,338.38 : 12,498.57 = 5,418.78 : x
  2. Step 2: Convert to fraction form
    8,338.38/12,498.57 = 5,418.78/x
  3. Step 3: Cross multiply
    8,338.38x = 12,498.57 × 5,418.78
  4. Step 4: Simplify right side
    8,338.38x = 67,727,001.14
  5. Step 5: Solve for x
    x = 67,727,001.14/8,338.38
  6. Step 6: Final answer
    x = 8,122.32

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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.