Home / 3,939.75-5,910.64-1,474.61

Finding the Fourth Proportional to 3,939.75, 5,910.64 and 1,474.61

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Solution

The fourth proportional to 3,939.75, 5,910.64 and 1,474.61 is: 2,212.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.75 : 5,910.64 = 1,474.61 : x
  2. Step 2: Convert to fraction form
    3,939.75/5,910.64 = 1,474.61/x
  3. Step 3: Cross multiply
    3,939.75x = 5,910.64 × 1,474.61
  4. Step 4: Simplify right side
    3,939.75x = 8,715,855.61
  5. Step 5: Solve for x
    x = 8,715,855.61/3,939.75
  6. Step 6: Final answer
    x = 2,212.29

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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.