Home / 3,943.92-5,438.70-2,371.80

Finding the Fourth Proportional to 3,943.92, 5,438.70 and 2,371.80

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Solution

The fourth proportional to 3,943.92, 5,438.70 and 2,371.80 is: 3,270.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943.92 : 5,438.70 = 2,371.80 : x
  2. Step 2: Convert to fraction form
    3,943.92/5,438.70 = 2,371.80/x
  3. Step 3: Cross multiply
    3,943.92x = 5,438.70 × 2,371.80
  4. Step 4: Simplify right side
    3,943.92x = 12,899,508.66
  5. Step 5: Solve for x
    x = 12,899,508.66/3,943.92
  6. Step 6: Final answer
    x = 3,270.73

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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.