Home / 3,876.87-5,351.92-2,480.43

Finding the Fourth Proportional to 3,876.87, 5,351.92 and 2,480.43

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Solution

The fourth proportional to 3,876.87, 5,351.92 and 2,480.43 is: 3,424.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.87 : 5,351.92 = 2,480.43 : x
  2. Step 2: Convert to fraction form
    3,876.87/5,351.92 = 2,480.43/x
  3. Step 3: Cross multiply
    3,876.87x = 5,351.92 × 2,480.43
  4. Step 4: Simplify right side
    3,876.87x = 13,275,056.72
  5. Step 5: Solve for x
    x = 13,275,056.72/3,876.87
  6. Step 6: Final answer
    x = 3,424.17

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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.