Home / 2,839.26-4,259.43-1,107.78

Finding the Fourth Proportional to 2,839.26, 4,259.43 and 1,107.78

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Solution

The fourth proportional to 2,839.26, 4,259.43 and 1,107.78 is: 1,661.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.26 : 4,259.43 = 1,107.78 : x
  2. Step 2: Convert to fraction form
    2,839.26/4,259.43 = 1,107.78/x
  3. Step 3: Cross multiply
    2,839.26x = 4,259.43 × 1,107.78
  4. Step 4: Simplify right side
    2,839.26x = 4,718,511.37
  5. Step 5: Solve for x
    x = 4,718,511.37/2,839.26
  6. Step 6: Final answer
    x = 1,661.88

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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.