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Finding the Fourth Proportional to 5,721.80, 8,573.10 and 2,793.80

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Solution

The fourth proportional to 5,721.80, 8,573.10 and 2,793.80 is: 4,186.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,721.80 : 8,573.10 = 2,793.80 : x
  2. Step 2: Convert to fraction form
    5,721.80/8,573.10 = 2,793.80/x
  3. Step 3: Cross multiply
    5,721.80x = 8,573.10 × 2,793.80
  4. Step 4: Simplify right side
    5,721.80x = 23,951,526.78
  5. Step 5: Solve for x
    x = 23,951,526.78/5,721.80
  6. Step 6: Final answer
    x = 4,186.01

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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.