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Finding the Fourth Proportional to 1,793.03, 2,685.96 and 865.85

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Solution

The fourth proportional to 1,793.03, 2,685.96 and 865.85 is: 1,297.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,793.03 : 2,685.96 = 865.85 : x
  2. Step 2: Convert to fraction form
    1,793.03/2,685.96 = 865.85/x
  3. Step 3: Cross multiply
    1,793.03x = 2,685.96 × 865.85
  4. Step 4: Simplify right side
    1,793.03x = 2,325,625.04
  5. Step 5: Solve for x
    x = 2,325,625.04/1,793.03
  6. Step 6: Final answer
    x = 1,297.04

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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.