Home / 3,387.17-5,076.87-2,121.29

Finding the Fourth Proportional to 3,387.17, 5,076.87 and 2,121.29

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Solution

The fourth proportional to 3,387.17, 5,076.87 and 2,121.29 is: 3,179.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.17 : 5,076.87 = 2,121.29 : x
  2. Step 2: Convert to fraction form
    3,387.17/5,076.87 = 2,121.29/x
  3. Step 3: Cross multiply
    3,387.17x = 5,076.87 × 2,121.29
  4. Step 4: Simplify right side
    3,387.17x = 10,769,488.18
  5. Step 5: Solve for x
    x = 10,769,488.18/3,387.17
  6. Step 6: Final answer
    x = 3,179.50

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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.