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Finding the Fourth Proportional to 3,229.76, 4,843.16 and 1,280.64

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Solution

The fourth proportional to 3,229.76, 4,843.16 and 1,280.64 is: 1,920.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,229.76 : 4,843.16 = 1,280.64 : x
  2. Step 2: Convert to fraction form
    3,229.76/4,843.16 = 1,280.64/x
  3. Step 3: Cross multiply
    3,229.76x = 4,843.16 × 1,280.64
  4. Step 4: Simplify right side
    3,229.76x = 6,202,344.42
  5. Step 5: Solve for x
    x = 6,202,344.42/3,229.76
  6. Step 6: Final answer
    x = 1,920.37

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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.