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Finding the Fourth Proportional to 2,755.32, 3,801 and 1,917.96

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Solution

The fourth proportional to 2,755.32, 3,801 and 1,917.96 is: 2,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,755.32 : 3,801 = 1,917.96 : x
  2. Step 2: Convert to fraction form
    2,755.32/3,801 = 1,917.96/x
  3. Step 3: Cross multiply
    2,755.32x = 3,801 × 1,917.96
  4. Step 4: Simplify right side
    2,755.32x = 7,290,165.96
  5. Step 5: Solve for x
    x = 7,290,165.96/2,755.32
  6. Step 6: Final answer
    x = 2,645.85

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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.