Home / 8,649.20-12,961.56-3,449.36

Finding the Fourth Proportional to 8,649.20, 12,961.56 and 3,449.36

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Solution

The fourth proportional to 8,649.20, 12,961.56 and 3,449.36 is: 5,169.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.20 : 12,961.56 = 3,449.36 : x
  2. Step 2: Convert to fraction form
    8,649.20/12,961.56 = 3,449.36/x
  3. Step 3: Cross multiply
    8,649.20x = 12,961.56 × 3,449.36
  4. Step 4: Simplify right side
    8,649.20x = 44,709,086.60
  5. Step 5: Solve for x
    x = 44,709,086.60/8,649.20
  6. Step 6: Final answer
    x = 5,169.16

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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.