Home / 2,257.80-3,115.56-1,263

Finding the Fourth Proportional to 2,257.80, 3,115.56 and 1,263

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Solution

The fourth proportional to 2,257.80, 3,115.56 and 1,263 is: 1,742.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.80 : 3,115.56 = 1,263 : x
  2. Step 2: Convert to fraction form
    2,257.80/3,115.56 = 1,263/x
  3. Step 3: Cross multiply
    2,257.80x = 3,115.56 × 1,263
  4. Step 4: Simplify right side
    2,257.80x = 3,934,952.28
  5. Step 5: Solve for x
    x = 3,934,952.28/2,257.80
  6. Step 6: Final answer
    x = 1,742.83

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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.