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Finding the Fourth Proportional to 3,489.72, 4,815.03 and 1,997.25

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Solution

The fourth proportional to 3,489.72, 4,815.03 and 1,997.25 is: 2,755.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,489.72 : 4,815.03 = 1,997.25 : x
  2. Step 2: Convert to fraction form
    3,489.72/4,815.03 = 1,997.25/x
  3. Step 3: Cross multiply
    3,489.72x = 4,815.03 × 1,997.25
  4. Step 4: Simplify right side
    3,489.72x = 9,616,818.67
  5. Step 5: Solve for x
    x = 9,616,818.67/3,489.72
  6. Step 6: Final answer
    x = 2,755.76

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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.