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Finding the Fourth Proportional to 2,793.01, 4,188.39 and 1,231.90

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Solution

The fourth proportional to 2,793.01, 4,188.39 and 1,231.90 is: 1,847.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,793.01 : 4,188.39 = 1,231.90 : x
  2. Step 2: Convert to fraction form
    2,793.01/4,188.39 = 1,231.90/x
  3. Step 3: Cross multiply
    2,793.01x = 4,188.39 × 1,231.90
  4. Step 4: Simplify right side
    2,793.01x = 5,159,677.64
  5. Step 5: Solve for x
    x = 5,159,677.64/2,793.01
  6. Step 6: Final answer
    x = 1,847.35

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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.