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Finding the Fourth Proportional to 3,388.68, 5,081.68 and 2,293.36

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Solution

The fourth proportional to 3,388.68, 5,081.68 and 2,293.36 is: 3,439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.68 : 5,081.68 = 2,293.36 : x
  2. Step 2: Convert to fraction form
    3,388.68/5,081.68 = 2,293.36/x
  3. Step 3: Cross multiply
    3,388.68x = 5,081.68 × 2,293.36
  4. Step 4: Simplify right side
    3,388.68x = 11,654,121.64
  5. Step 5: Solve for x
    x = 11,654,121.64/3,388.68
  6. Step 6: Final answer
    x = 3,439.13

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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.