Home / 5,120.66-7,067.18-2,882.97

Finding the Fourth Proportional to 5,120.66, 7,067.18 and 2,882.97

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Solution

The fourth proportional to 5,120.66, 7,067.18 and 2,882.97 is: 3,978.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.66 : 7,067.18 = 2,882.97 : x
  2. Step 2: Convert to fraction form
    5,120.66/7,067.18 = 2,882.97/x
  3. Step 3: Cross multiply
    5,120.66x = 7,067.18 × 2,882.97
  4. Step 4: Simplify right side
    5,120.66x = 20,374,475.13
  5. Step 5: Solve for x
    x = 20,374,475.13/5,120.66
  6. Step 6: Final answer
    x = 3,978.88

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1.5x scale

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.