Home / 3,960.67-5,945.19-2,921.89

Finding the Fourth Proportional to 3,960.67, 5,945.19 and 2,921.89

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Solution

The fourth proportional to 3,960.67, 5,945.19 and 2,921.89 is: 4,385.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.67 : 5,945.19 = 2,921.89 : x
  2. Step 2: Convert to fraction form
    3,960.67/5,945.19 = 2,921.89/x
  3. Step 3: Cross multiply
    3,960.67x = 5,945.19 × 2,921.89
  4. Step 4: Simplify right side
    3,960.67x = 17,371,191.21
  5. Step 5: Solve for x
    x = 17,371,191.21/3,960.67
  6. Step 6: Final answer
    x = 4,385.92

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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.