Home / 3,910.60-5,865.72-1,961.32

Finding the Fourth Proportional to 3,910.60, 5,865.72 and 1,961.32

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Solution

The fourth proportional to 3,910.60, 5,865.72 and 1,961.32 is: 2,941.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.60 : 5,865.72 = 1,961.32 : x
  2. Step 2: Convert to fraction form
    3,910.60/5,865.72 = 1,961.32/x
  3. Step 3: Cross multiply
    3,910.60x = 5,865.72 × 1,961.32
  4. Step 4: Simplify right side
    3,910.60x = 11,504,553.95
  5. Step 5: Solve for x
    x = 11,504,553.95/3,910.60
  6. Step 6: Final answer
    x = 2,941.89

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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.