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Finding the Fourth Proportional to 1,793.80, 2,678.62 and 1,691.28

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Solution

The fourth proportional to 1,793.80, 2,678.62 and 1,691.28 is: 2,525.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.80 : 2,678.62 = 1,691.28 : x
  2. Step 2: Convert to fraction form
    1,793.80/2,678.62 = 1,691.28/x
  3. Step 3: Cross multiply
    1,793.80x = 2,678.62 × 1,691.28
  4. Step 4: Simplify right side
    1,793.80x = 4,530,295.38
  5. Step 5: Solve for x
    x = 4,530,295.38/1,793.80
  6. Step 6: Final answer
    x = 2,525.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.