Home / 2,279.14-3,145.26-1,284.46

Finding the Fourth Proportional to 2,279.14, 3,145.26 and 1,284.46

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Solution

The fourth proportional to 2,279.14, 3,145.26 and 1,284.46 is: 1,772.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.14 : 3,145.26 = 1,284.46 : x
  2. Step 2: Convert to fraction form
    2,279.14/3,145.26 = 1,284.46/x
  3. Step 3: Cross multiply
    2,279.14x = 3,145.26 × 1,284.46
  4. Step 4: Simplify right side
    2,279.14x = 4,039,960.66
  5. Step 5: Solve for x
    x = 4,039,960.66/2,279.14
  6. Step 6: Final answer
    x = 1,772.58

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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.