Home / 8,791.20-13,189.28-3,600.80

Finding the Fourth Proportional to 8,791.20, 13,189.28 and 3,600.80

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Solution

The fourth proportional to 8,791.20, 13,189.28 and 3,600.80 is: 5,402.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.20 : 13,189.28 = 3,600.80 : x
  2. Step 2: Convert to fraction form
    8,791.20/13,189.28 = 3,600.80/x
  3. Step 3: Cross multiply
    8,791.20x = 13,189.28 × 3,600.80
  4. Step 4: Simplify right side
    8,791.20x = 47,491,959.42
  5. Step 5: Solve for x
    x = 47,491,959.42/8,791.20
  6. Step 6: Final answer
    x = 5,402.22

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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.