Home / 1,775.15-2,449.94-1,279.43

Finding the Fourth Proportional to 1,775.15, 2,449.94 and 1,279.43

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Solution

The fourth proportional to 1,775.15, 2,449.94 and 1,279.43 is: 1,765.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775.15 : 2,449.94 = 1,279.43 : x
  2. Step 2: Convert to fraction form
    1,775.15/2,449.94 = 1,279.43/x
  3. Step 3: Cross multiply
    1,775.15x = 2,449.94 × 1,279.43
  4. Step 4: Simplify right side
    1,775.15x = 3,134,508.09
  5. Step 5: Solve for x
    x = 3,134,508.09/1,775.15
  6. Step 6: Final answer
    x = 1,765.78

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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.