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Finding the Fourth Proportional to 2,773.87, 4,160.80 and 1,129.97

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Solution

The fourth proportional to 2,773.87, 4,160.80 and 1,129.97 is: 1,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,773.87 : 4,160.80 = 1,129.97 : x
  2. Step 2: Convert to fraction form
    2,773.87/4,160.80 = 1,129.97/x
  3. Step 3: Cross multiply
    2,773.87x = 4,160.80 × 1,129.97
  4. Step 4: Simplify right side
    2,773.87x = 4,701,590.99
  5. Step 5: Solve for x
    x = 4,701,590.99/2,773.87
  6. Step 6: Final answer
    x = 1,694.96

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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.