Home / 9,115.20-13,674.24-3,921.12

Finding the Fourth Proportional to 9,115.20, 13,674.24 and 3,921.12

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Solution

The fourth proportional to 9,115.20, 13,674.24 and 3,921.12 is: 5,882.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.20 : 13,674.24 = 3,921.12 : x
  2. Step 2: Convert to fraction form
    9,115.20/13,674.24 = 3,921.12/x
  3. Step 3: Cross multiply
    9,115.20x = 13,674.24 × 3,921.12
  4. Step 4: Simplify right side
    9,115.20x = 53,618,335.95
  5. Step 5: Solve for x
    x = 53,618,335.95/9,115.20
  6. Step 6: Final answer
    x = 5,882.30

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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.