Home / 5,255.44-7,249.30-3,129.56

Finding the Fourth Proportional to 5,255.44, 7,249.30 and 3,129.56

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Solution

The fourth proportional to 5,255.44, 7,249.30 and 3,129.56 is: 4,316.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.44 : 7,249.30 = 3,129.56 : x
  2. Step 2: Convert to fraction form
    5,255.44/7,249.30 = 3,129.56/x
  3. Step 3: Cross multiply
    5,255.44x = 7,249.30 × 3,129.56
  4. Step 4: Simplify right side
    5,255.44x = 22,687,119.31
  5. Step 5: Solve for x
    x = 22,687,119.31/5,255.44
  6. Step 6: Final answer
    x = 4,316.88

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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.