Home / 4,721.92-7,082.89-2,121.82

Finding the Fourth Proportional to 4,721.92, 7,082.89 and 2,121.82

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Solution

The fourth proportional to 4,721.92, 7,082.89 and 2,121.82 is: 3,182.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.92 : 7,082.89 = 2,121.82 : x
  2. Step 2: Convert to fraction form
    4,721.92/7,082.89 = 2,121.82/x
  3. Step 3: Cross multiply
    4,721.92x = 7,082.89 × 2,121.82
  4. Step 4: Simplify right side
    4,721.92x = 15,028,617.66
  5. Step 5: Solve for x
    x = 15,028,617.66/4,721.92
  6. Step 6: Final answer
    x = 3,182.73

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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.