Home / 3,961.85-5,942.78-1,040.21

Finding the Fourth Proportional to 3,961.85, 5,942.78 and 1,040.21

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Solution

The fourth proportional to 3,961.85, 5,942.78 and 1,040.21 is: 1,560.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,961.85 : 5,942.78 = 1,040.21 : x
  2. Step 2: Convert to fraction form
    3,961.85/5,942.78 = 1,040.21/x
  3. Step 3: Cross multiply
    3,961.85x = 5,942.78 × 1,040.21
  4. Step 4: Simplify right side
    3,961.85x = 6,181,739.18
  5. Step 5: Solve for x
    x = 6,181,739.18/3,961.85
  6. Step 6: Final answer
    x = 1,560.32

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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.