Home / 2,921.78-4,033.26-2,082.62

Finding the Fourth Proportional to 2,921.78, 4,033.26 and 2,082.62

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Solution

The fourth proportional to 2,921.78, 4,033.26 and 2,082.62 is: 2,874.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.78 : 4,033.26 = 2,082.62 : x
  2. Step 2: Convert to fraction form
    2,921.78/4,033.26 = 2,082.62/x
  3. Step 3: Cross multiply
    2,921.78x = 4,033.26 × 2,082.62
  4. Step 4: Simplify right side
    2,921.78x = 8,399,747.94
  5. Step 5: Solve for x
    x = 8,399,747.94/2,921.78
  6. Step 6: Final answer
    x = 2,874.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.