Home / 2,279.37-3,145.49-1,284.65

Finding the Fourth Proportional to 2,279.37, 3,145.49 and 1,284.65

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Solution

The fourth proportional to 2,279.37, 3,145.49 and 1,284.65 is: 1,772.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.37 : 3,145.49 = 1,284.65 : x
  2. Step 2: Convert to fraction form
    2,279.37/3,145.49 = 1,284.65/x
  3. Step 3: Cross multiply
    2,279.37x = 3,145.49 × 1,284.65
  4. Step 4: Simplify right side
    2,279.37x = 4,040,831.58
  5. Step 5: Solve for x
    x = 4,040,831.58/2,279.37
  6. Step 6: Final answer
    x = 1,772.78

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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.