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Finding the Fourth Proportional to 2,823.25, 4,234.53 and 743.42

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Solution

The fourth proportional to 2,823.25, 4,234.53 and 743.42 is: 1,115.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,823.25 : 4,234.53 = 743.42 : x
  2. Step 2: Convert to fraction form
    2,823.25/4,234.53 = 743.42/x
  3. Step 3: Cross multiply
    2,823.25x = 4,234.53 × 743.42
  4. Step 4: Simplify right side
    2,823.25x = 3,148,015.91
  5. Step 5: Solve for x
    x = 3,148,015.91/2,823.25
  6. Step 6: Final answer
    x = 1,115.03

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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.