Home / 3,961.05-5,940.68-1,187.37

Finding the Fourth Proportional to 3,961.05, 5,940.68 and 1,187.37

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Solution

The fourth proportional to 3,961.05, 5,940.68 and 1,187.37 is: 1,780.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.05 : 5,940.68 = 1,187.37 : x
  2. Step 2: Convert to fraction form
    3,961.05/5,940.68 = 1,187.37/x
  3. Step 3: Cross multiply
    3,961.05x = 5,940.68 × 1,187.37
  4. Step 4: Simplify right side
    3,961.05x = 7,053,762.57
  5. Step 5: Solve for x
    x = 7,053,762.57/3,961.05
  6. Step 6: Final answer
    x = 1,780.78

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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.