Home / 5,418.60-8,127.90-5,151.30

Finding the Fourth Proportional to 5,418.60, 8,127.90 and 5,151.30

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Solution

The fourth proportional to 5,418.60, 8,127.90 and 5,151.30 is: 7,726.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.60 : 8,127.90 = 5,151.30 : x
  2. Step 2: Convert to fraction form
    5,418.60/8,127.90 = 5,151.30/x
  3. Step 3: Cross multiply
    5,418.60x = 8,127.90 × 5,151.30
  4. Step 4: Simplify right side
    5,418.60x = 41,869,251.27
  5. Step 5: Solve for x
    x = 41,869,251.27/5,418.60
  6. Step 6: Final answer
    x = 7,726.95

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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.