Home / 3,311.28-4,957.20-2,320.65

Finding the Fourth Proportional to 3,311.28, 4,957.20 and 2,320.65

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Solution

The fourth proportional to 3,311.28, 4,957.20 and 2,320.65 is: 3,474.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.28 : 4,957.20 = 2,320.65 : x
  2. Step 2: Convert to fraction form
    3,311.28/4,957.20 = 2,320.65/x
  3. Step 3: Cross multiply
    3,311.28x = 4,957.20 × 2,320.65
  4. Step 4: Simplify right side
    3,311.28x = 11,503,926.18
  5. Step 5: Solve for x
    x = 11,503,926.18/3,311.28
  6. Step 6: Final answer
    x = 3,474.16

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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.