Home / 3,961.31-5,941.20-1,187.98

Finding the Fourth Proportional to 3,961.31, 5,941.20 and 1,187.98

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Solution

The fourth proportional to 3,961.31, 5,941.20 and 1,187.98 is: 1,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.31 : 5,941.20 = 1,187.98 : x
  2. Step 2: Convert to fraction form
    3,961.31/5,941.20 = 1,187.98/x
  3. Step 3: Cross multiply
    3,961.31x = 5,941.20 × 1,187.98
  4. Step 4: Simplify right side
    3,961.31x = 7,057,997.07
  5. Step 5: Solve for x
    x = 7,057,997.07/3,961.31
  6. Step 6: Final answer
    x = 1,781.74

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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.