Home / 3,876.43-5,812.86-2,122.03

Finding the Fourth Proportional to 3,876.43, 5,812.86 and 2,122.03

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Solution

The fourth proportional to 3,876.43, 5,812.86 and 2,122.03 is: 3,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.43 : 5,812.86 = 2,122.03 : x
  2. Step 2: Convert to fraction form
    3,876.43/5,812.86 = 2,122.03/x
  3. Step 3: Cross multiply
    3,876.43x = 5,812.86 × 2,122.03
  4. Step 4: Simplify right side
    3,876.43x = 12,335,034.24
  5. Step 5: Solve for x
    x = 12,335,034.24/3,876.43
  6. Step 6: Final answer
    x = 3,182.06

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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.