Home / 2,284.20-3,426.44-640.88

Finding the Fourth Proportional to 2,284.20, 3,426.44 and 640.88

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Solution

The fourth proportional to 2,284.20, 3,426.44 and 640.88 is: 961.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,284.20 : 3,426.44 = 640.88 : x
  2. Step 2: Convert to fraction form
    2,284.20/3,426.44 = 640.88/x
  3. Step 3: Cross multiply
    2,284.20x = 3,426.44 × 640.88
  4. Step 4: Simplify right side
    2,284.20x = 2,195,936.87
  5. Step 5: Solve for x
    x = 2,195,936.87/2,284.20
  6. Step 6: Final answer
    x = 961.36

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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.