Home / 2,225.28-3,337.92-764.85

Finding the Fourth Proportional to 2,225.28, 3,337.92 and 764.85

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Solution

The fourth proportional to 2,225.28, 3,337.92 and 764.85 is: 1,147.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.28 : 3,337.92 = 764.85 : x
  2. Step 2: Convert to fraction form
    2,225.28/3,337.92 = 764.85/x
  3. Step 3: Cross multiply
    2,225.28x = 3,337.92 × 764.85
  4. Step 4: Simplify right side
    2,225.28x = 2,553,008.11
  5. Step 5: Solve for x
    x = 2,553,008.11/2,225.28
  6. Step 6: Final answer
    x = 1,147.28

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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.