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Finding the Fourth Proportional to 2,721.44, 4,082.62 and 873.02

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Solution

The fourth proportional to 2,721.44, 4,082.62 and 873.02 is: 1,309.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.44 : 4,082.62 = 873.02 : x
  2. Step 2: Convert to fraction form
    2,721.44/4,082.62 = 873.02/x
  3. Step 3: Cross multiply
    2,721.44x = 4,082.62 × 873.02
  4. Step 4: Simplify right side
    2,721.44x = 3,564,208.91
  5. Step 5: Solve for x
    x = 3,564,208.91/2,721.44
  6. Step 6: Final answer
    x = 1,309.68

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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.