Home / 3,961.56-5,942.40-1,187.64

Finding the Fourth Proportional to 3,961.56, 5,942.40 and 1,187.64

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Solution

The fourth proportional to 3,961.56, 5,942.40 and 1,187.64 is: 1,781.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.56 : 5,942.40 = 1,187.64 : x
  2. Step 2: Convert to fraction form
    3,961.56/5,942.40 = 1,187.64/x
  3. Step 3: Cross multiply
    3,961.56x = 5,942.40 × 1,187.64
  4. Step 4: Simplify right side
    3,961.56x = 7,057,431.94
  5. Step 5: Solve for x
    x = 7,057,431.94/3,961.56
  6. Step 6: Final answer
    x = 1,781.48

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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.