Home / 2,279.43-3,145.35-1,284.68

Finding the Fourth Proportional to 2,279.43, 3,145.35 and 1,284.68

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Solution

The fourth proportional to 2,279.43, 3,145.35 and 1,284.68 is: 1,772.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.43 : 3,145.35 = 1,284.68 : x
  2. Step 2: Convert to fraction form
    2,279.43/3,145.35 = 1,284.68/x
  3. Step 3: Cross multiply
    2,279.43x = 3,145.35 × 1,284.68
  4. Step 4: Simplify right side
    2,279.43x = 4,040,768.24
  5. Step 5: Solve for x
    x = 4,040,768.24/2,279.43
  6. Step 6: Final answer
    x = 1,772.71

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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.