Home / 3,940.75-5,912.14-1,475.61

Finding the Fourth Proportional to 3,940.75, 5,912.14 and 1,475.61

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Solution

The fourth proportional to 3,940.75, 5,912.14 and 1,475.61 is: 2,213.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.75 : 5,912.14 = 1,475.61 : x
  2. Step 2: Convert to fraction form
    3,940.75/5,912.14 = 1,475.61/x
  3. Step 3: Cross multiply
    3,940.75x = 5,912.14 × 1,475.61
  4. Step 4: Simplify right side
    3,940.75x = 8,723,983.34
  5. Step 5: Solve for x
    x = 8,723,983.34/3,940.75
  6. Step 6: Final answer
    x = 2,213.79

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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.