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Finding the Fourth Proportional to 1,912.73, 2,869.24 and 817.10

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Solution

The fourth proportional to 1,912.73, 2,869.24 and 817.10 is: 1,225.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.73 : 2,869.24 = 817.10 : x
  2. Step 2: Convert to fraction form
    1,912.73/2,869.24 = 817.10/x
  3. Step 3: Cross multiply
    1,912.73x = 2,869.24 × 817.10
  4. Step 4: Simplify right side
    1,912.73x = 2,344,456.00
  5. Step 5: Solve for x
    x = 2,344,456.00/1,912.73
  6. Step 6: Final answer
    x = 1,225.71

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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.