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Finding the Fourth Proportional to 2,297.75, 3,448.26 and 911.12

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Solution

The fourth proportional to 2,297.75, 3,448.26 and 911.12 is: 1,367.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,297.75 : 3,448.26 = 911.12 : x
  2. Step 2: Convert to fraction form
    2,297.75/3,448.26 = 911.12/x
  3. Step 3: Cross multiply
    2,297.75x = 3,448.26 × 911.12
  4. Step 4: Simplify right side
    2,297.75x = 3,141,761.41
  5. Step 5: Solve for x
    x = 3,141,761.41/2,297.75
  6. Step 6: Final answer
    x = 1,367.32

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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.