Home / 2,759.15-4,138.32-1,115.66

Finding the Fourth Proportional to 2,759.15, 4,138.32 and 1,115.66

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Solution

The fourth proportional to 2,759.15, 4,138.32 and 1,115.66 is: 1,673.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,759.15 : 4,138.32 = 1,115.66 : x
  2. Step 2: Convert to fraction form
    2,759.15/4,138.32 = 1,115.66/x
  3. Step 3: Cross multiply
    2,759.15x = 4,138.32 × 1,115.66
  4. Step 4: Simplify right side
    2,759.15x = 4,616,958.09
  5. Step 5: Solve for x
    x = 4,616,958.09/2,759.15
  6. Step 6: Final answer
    x = 1,673.33

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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.