Home / 3,715.38-5,123.30-2,387.97

Finding the Fourth Proportional to 3,715.38, 5,123.30 and 2,387.97

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Solution

The fourth proportional to 3,715.38, 5,123.30 and 2,387.97 is: 3,292.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.38 : 5,123.30 = 2,387.97 : x
  2. Step 2: Convert to fraction form
    3,715.38/5,123.30 = 2,387.97/x
  3. Step 3: Cross multiply
    3,715.38x = 5,123.30 × 2,387.97
  4. Step 4: Simplify right side
    3,715.38x = 12,234,274.76
  5. Step 5: Solve for x
    x = 12,234,274.76/3,715.38
  6. Step 6: Final answer
    x = 3,292.87

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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.