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Finding the Fourth Proportional to 2,092.50, 3,138.75 and 794.48

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Solution

The fourth proportional to 2,092.50, 3,138.75 and 794.48 is: 1,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,092.50 : 3,138.75 = 794.48 : x
  2. Step 2: Convert to fraction form
    2,092.50/3,138.75 = 794.48/x
  3. Step 3: Cross multiply
    2,092.50x = 3,138.75 × 794.48
  4. Step 4: Simplify right side
    2,092.50x = 2,493,658.41
  5. Step 5: Solve for x
    x = 2,493,658.41/2,092.50
  6. Step 6: Final answer
    x = 1,191.71

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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.