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Finding the Fourth Proportional to 1,723.43, 2,583.78 and 748.85

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Solution

The fourth proportional to 1,723.43, 2,583.78 and 748.85 is: 1,122.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.43 : 2,583.78 = 748.85 : x
  2. Step 2: Convert to fraction form
    1,723.43/2,583.78 = 748.85/x
  3. Step 3: Cross multiply
    1,723.43x = 2,583.78 × 748.85
  4. Step 4: Simplify right side
    1,723.43x = 1,934,863.65
  5. Step 5: Solve for x
    x = 1,934,863.65/1,723.43
  6. Step 6: Final answer
    x = 1,122.68

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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.