Home / 3,927.38-5,414.20-3,123.66

Finding the Fourth Proportional to 3,927.38, 5,414.20 and 3,123.66

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Solution

The fourth proportional to 3,927.38, 5,414.20 and 3,123.66 is: 4,306.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.38 : 5,414.20 = 3,123.66 : x
  2. Step 2: Convert to fraction form
    3,927.38/5,414.20 = 3,123.66/x
  3. Step 3: Cross multiply
    3,927.38x = 5,414.20 × 3,123.66
  4. Step 4: Simplify right side
    3,927.38x = 16,912,108.75
  5. Step 5: Solve for x
    x = 16,912,108.75/3,927.38
  6. Step 6: Final answer
    x = 4,306.21

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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.