Home / 9,135.20-13,694.56-3,287.68

Finding the Fourth Proportional to 9,135.20, 13,694.56 and 3,287.68

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Solution

The fourth proportional to 9,135.20, 13,694.56 and 3,287.68 is: 4,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,135.20 : 13,694.56 = 3,287.68 : x
  2. Step 2: Convert to fraction form
    9,135.20/13,694.56 = 3,287.68/x
  3. Step 3: Cross multiply
    9,135.20x = 13,694.56 × 3,287.68
  4. Step 4: Simplify right side
    9,135.20x = 45,023,331.02
  5. Step 5: Solve for x
    x = 45,023,331.02/9,135.20
  6. Step 6: Final answer
    x = 4,928.55

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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.