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Finding the Fourth Proportional to 2,758.05, 3,806.11 and 1,516.05

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Solution

The fourth proportional to 2,758.05, 3,806.11 and 1,516.05 is: 2,092.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,758.05 : 3,806.11 = 1,516.05 : x
  2. Step 2: Convert to fraction form
    2,758.05/3,806.11 = 1,516.05/x
  3. Step 3: Cross multiply
    2,758.05x = 3,806.11 × 1,516.05
  4. Step 4: Simplify right side
    2,758.05x = 5,770,235.97
  5. Step 5: Solve for x
    x = 5,770,235.97/2,758.05
  6. Step 6: Final answer
    x = 2,092.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.