Home / 2,721.21-4,082.22-1,259.97

Finding the Fourth Proportional to 2,721.21, 4,082.22 and 1,259.97

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Solution

The fourth proportional to 2,721.21, 4,082.22 and 1,259.97 is: 1,890.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.21 : 4,082.22 = 1,259.97 : x
  2. Step 2: Convert to fraction form
    2,721.21/4,082.22 = 1,259.97/x
  3. Step 3: Cross multiply
    2,721.21x = 4,082.22 × 1,259.97
  4. Step 4: Simplify right side
    2,721.21x = 5,143,474.73
  5. Step 5: Solve for x
    x = 5,143,474.73/2,721.21
  6. Step 6: Final answer
    x = 1,890.14

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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.