Home / 3,691.92-5,540.16-2,135

Finding the Fourth Proportional to 3,691.92, 5,540.16 and 2,135

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Solution

The fourth proportional to 3,691.92, 5,540.16 and 2,135 is: 3,203.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,691.92 : 5,540.16 = 2,135 : x
  2. Step 2: Convert to fraction form
    3,691.92/5,540.16 = 2,135/x
  3. Step 3: Cross multiply
    3,691.92x = 5,540.16 × 2,135
  4. Step 4: Simplify right side
    3,691.92x = 11,828,241.60
  5. Step 5: Solve for x
    x = 11,828,241.60/3,691.92
  6. Step 6: Final answer
    x = 3,203.82

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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.