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Finding the Fourth Proportional to 3,480.92, 5,222.20 and 1,015.68

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Solution

The fourth proportional to 3,480.92, 5,222.20 and 1,015.68 is: 1,523.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.92 : 5,222.20 = 1,015.68 : x
  2. Step 2: Convert to fraction form
    3,480.92/5,222.20 = 1,015.68/x
  3. Step 3: Cross multiply
    3,480.92x = 5,222.20 × 1,015.68
  4. Step 4: Simplify right side
    3,480.92x = 5,304,084.10
  5. Step 5: Solve for x
    x = 5,304,084.10/3,480.92
  6. Step 6: Final answer
    x = 1,523.76

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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.