Home / 3,247.28-4,481.57-1,989.15

Finding the Fourth Proportional to 3,247.28, 4,481.57 and 1,989.15

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Solution

The fourth proportional to 3,247.28, 4,481.57 and 1,989.15 is: 2,745.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,247.28 : 4,481.57 = 1,989.15 : x
  2. Step 2: Convert to fraction form
    3,247.28/4,481.57 = 1,989.15/x
  3. Step 3: Cross multiply
    3,247.28x = 4,481.57 × 1,989.15
  4. Step 4: Simplify right side
    3,247.28x = 8,914,514.97
  5. Step 5: Solve for x
    x = 8,914,514.97/3,247.28
  6. Step 6: Final answer
    x = 2,745.23

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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.