Home / 3,936.24-5,432.05-2,167.90

Finding the Fourth Proportional to 3,936.24, 5,432.05 and 2,167.90

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Solution

The fourth proportional to 3,936.24, 5,432.05 and 2,167.90 is: 2,991.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.24 : 5,432.05 = 2,167.90 : x
  2. Step 2: Convert to fraction form
    3,936.24/5,432.05 = 2,167.90/x
  3. Step 3: Cross multiply
    3,936.24x = 5,432.05 × 2,167.90
  4. Step 4: Simplify right side
    3,936.24x = 11,776,141.20
  5. Step 5: Solve for x
    x = 11,776,141.20/3,936.24
  6. Step 6: Final answer
    x = 2,991.72

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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.