Home / 7,961.82-11,942.38-3,220.03

Finding the Fourth Proportional to 7,961.82, 11,942.38 and 3,220.03

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Solution

The fourth proportional to 7,961.82, 11,942.38 and 3,220.03 is: 4,829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.82 : 11,942.38 = 3,220.03 : x
  2. Step 2: Convert to fraction form
    7,961.82/11,942.38 = 3,220.03/x
  3. Step 3: Cross multiply
    7,961.82x = 11,942.38 × 3,220.03
  4. Step 4: Simplify right side
    7,961.82x = 38,454,821.87
  5. Step 5: Solve for x
    x = 38,454,821.87/7,961.82
  6. Step 6: Final answer
    x = 4,829.90

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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.