Home / 8,387.28-12,580.92-3,453.57

Finding the Fourth Proportional to 8,387.28, 12,580.92 and 3,453.57

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Solution

The fourth proportional to 8,387.28, 12,580.92 and 3,453.57 is: 5,180.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.28 : 12,580.92 = 3,453.57 : x
  2. Step 2: Convert to fraction form
    8,387.28/12,580.92 = 3,453.57/x
  3. Step 3: Cross multiply
    8,387.28x = 12,580.92 × 3,453.57
  4. Step 4: Simplify right side
    8,387.28x = 43,449,087.88
  5. Step 5: Solve for x
    x = 43,449,087.88/8,387.28
  6. Step 6: Final answer
    x = 5,180.36

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1.5x scale

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.