Home / 2,257.62-3,115.44-1,262.90

Finding the Fourth Proportional to 2,257.62, 3,115.44 and 1,262.90

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Solution

The fourth proportional to 2,257.62, 3,115.44 and 1,262.90 is: 1,742.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.62 : 3,115.44 = 1,262.90 : x
  2. Step 2: Convert to fraction form
    2,257.62/3,115.44 = 1,262.90/x
  3. Step 3: Cross multiply
    2,257.62x = 3,115.44 × 1,262.90
  4. Step 4: Simplify right side
    2,257.62x = 3,934,473.60
  5. Step 5: Solve for x
    x = 3,934,473.60/2,257.62
  6. Step 6: Final answer
    x = 1,742.75

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1.5x scale

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.