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Finding the Fourth Proportional to 2,275.62, 3,414 and 814.92

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Solution

The fourth proportional to 2,275.62, 3,414 and 814.92 is: 1,222.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,275.62 : 3,414 = 814.92 : x
  2. Step 2: Convert to fraction form
    2,275.62/3,414 = 814.92/x
  3. Step 3: Cross multiply
    2,275.62x = 3,414 × 814.92
  4. Step 4: Simplify right side
    2,275.62x = 2,782,136.88
  5. Step 5: Solve for x
    x = 2,782,136.88/2,275.62
  6. Step 6: Final answer
    x = 1,222.58

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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.