Home / 3,780.50-5,217.09-2,208.61

Finding the Fourth Proportional to 3,780.50, 5,217.09 and 2,208.61

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Solution

The fourth proportional to 3,780.50, 5,217.09 and 2,208.61 is: 3,047.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.50 : 5,217.09 = 2,208.61 : x
  2. Step 2: Convert to fraction form
    3,780.50/5,217.09 = 2,208.61/x
  3. Step 3: Cross multiply
    3,780.50x = 5,217.09 × 2,208.61
  4. Step 4: Simplify right side
    3,780.50x = 11,522,517.14
  5. Step 5: Solve for x
    x = 11,522,517.14/3,780.50
  6. Step 6: Final answer
    x = 3,047.88

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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.