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Finding the Fourth Proportional to 2,791.94, 4,185 and 2,761.29

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Solution

The fourth proportional to 2,791.94, 4,185 and 2,761.29 is: 4,139.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.94 : 4,185 = 2,761.29 : x
  2. Step 2: Convert to fraction form
    2,791.94/4,185 = 2,761.29/x
  3. Step 3: Cross multiply
    2,791.94x = 4,185 × 2,761.29
  4. Step 4: Simplify right side
    2,791.94x = 11,555,998.65
  5. Step 5: Solve for x
    x = 11,555,998.65/2,791.94
  6. Step 6: Final answer
    x = 4,139.06

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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.