Home / 3,942.30-5,910.45-1,995.90

Finding the Fourth Proportional to 3,942.30, 5,910.45 and 1,995.90

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Solution

The fourth proportional to 3,942.30, 5,910.45 and 1,995.90 is: 2,992.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.30 : 5,910.45 = 1,995.90 : x
  2. Step 2: Convert to fraction form
    3,942.30/5,910.45 = 1,995.90/x
  3. Step 3: Cross multiply
    3,942.30x = 5,910.45 × 1,995.90
  4. Step 4: Simplify right side
    3,942.30x = 11,796,667.16
  5. Step 5: Solve for x
    x = 11,796,667.16/3,942.30
  6. Step 6: Final answer
    x = 2,992.33

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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.