Home / 3,936.60-5,904.90-3,231.90

Finding the Fourth Proportional to 3,936.60, 5,904.90 and 3,231.90

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Solution

The fourth proportional to 3,936.60, 5,904.90 and 3,231.90 is: 4,847.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936.60 : 5,904.90 = 3,231.90 : x
  2. Step 2: Convert to fraction form
    3,936.60/5,904.90 = 3,231.90/x
  3. Step 3: Cross multiply
    3,936.60x = 5,904.90 × 3,231.90
  4. Step 4: Simplify right side
    3,936.60x = 19,084,046.31
  5. Step 5: Solve for x
    x = 19,084,046.31/3,936.60
  6. Step 6: Final answer
    x = 4,847.85

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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.