Home / 2,282.76-3,149.88-1,287.90

Finding the Fourth Proportional to 2,282.76, 3,149.88 and 1,287.90

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Solution

The fourth proportional to 2,282.76, 3,149.88 and 1,287.90 is: 1,777.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,282.76 : 3,149.88 = 1,287.90 : x
  2. Step 2: Convert to fraction form
    2,282.76/3,149.88 = 1,287.90/x
  3. Step 3: Cross multiply
    2,282.76x = 3,149.88 × 1,287.90
  4. Step 4: Simplify right side
    2,282.76x = 4,056,730.45
  5. Step 5: Solve for x
    x = 4,056,730.45/2,282.76
  6. Step 6: Final answer
    x = 1,777.12

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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.