Home / 3,997.80-5,516.82-2,318.10

Finding the Fourth Proportional to 3,997.80, 5,516.82 and 2,318.10

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Solution

The fourth proportional to 3,997.80, 5,516.82 and 2,318.10 is: 3,198.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.80 : 5,516.82 = 2,318.10 : x
  2. Step 2: Convert to fraction form
    3,997.80/5,516.82 = 2,318.10/x
  3. Step 3: Cross multiply
    3,997.80x = 5,516.82 × 2,318.10
  4. Step 4: Simplify right side
    3,997.80x = 12,788,540.44
  5. Step 5: Solve for x
    x = 12,788,540.44/3,997.80
  6. Step 6: Final answer
    x = 3,198.89

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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.