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Finding the Fourth Proportional to 3,394.80, 5,079.24 and 2,242.80

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Solution

The fourth proportional to 3,394.80, 5,079.24 and 2,242.80 is: 3,355.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.80 : 5,079.24 = 2,242.80 : x
  2. Step 2: Convert to fraction form
    3,394.80/5,079.24 = 2,242.80/x
  3. Step 3: Cross multiply
    3,394.80x = 5,079.24 × 2,242.80
  4. Step 4: Simplify right side
    3,394.80x = 11,391,719.47
  5. Step 5: Solve for x
    x = 11,391,719.47/3,394.80
  6. Step 6: Final answer
    x = 3,355.64

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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.