Home / 3,965.15-5,945.94-1,190.90

Finding the Fourth Proportional to 3,965.15, 5,945.94 and 1,190.90

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Solution

The fourth proportional to 3,965.15, 5,945.94 and 1,190.90 is: 1,785.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,965.15 : 5,945.94 = 1,190.90 : x
  2. Step 2: Convert to fraction form
    3,965.15/5,945.94 = 1,190.90/x
  3. Step 3: Cross multiply
    3,965.15x = 5,945.94 × 1,190.90
  4. Step 4: Simplify right side
    3,965.15x = 7,080,990.22
  5. Step 5: Solve for x
    x = 7,080,990.22/3,965.15
  6. Step 6: Final answer
    x = 1,785.81

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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.