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Finding the Fourth Proportional to 2,872.27, 4,308.42 and 792.19

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Solution

The fourth proportional to 2,872.27, 4,308.42 and 792.19 is: 1,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.27 : 4,308.42 = 792.19 : x
  2. Step 2: Convert to fraction form
    2,872.27/4,308.42 = 792.19/x
  3. Step 3: Cross multiply
    2,872.27x = 4,308.42 × 792.19
  4. Step 4: Simplify right side
    2,872.27x = 3,413,087.24
  5. Step 5: Solve for x
    x = 3,413,087.24/2,872.27
  6. Step 6: Final answer
    x = 1,188.29

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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.