Home / 3,489.52-4,815.20-1,997.12

Finding the Fourth Proportional to 3,489.52, 4,815.20 and 1,997.12

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Solution

The fourth proportional to 3,489.52, 4,815.20 and 1,997.12 is: 2,755.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.52 : 4,815.20 = 1,997.12 : x
  2. Step 2: Convert to fraction form
    3,489.52/4,815.20 = 1,997.12/x
  3. Step 3: Cross multiply
    3,489.52x = 4,815.20 × 1,997.12
  4. Step 4: Simplify right side
    3,489.52x = 9,616,532.22
  5. Step 5: Solve for x
    x = 9,616,532.22/3,489.52
  6. Step 6: Final answer
    x = 2,755.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.