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Finding the Fourth Proportional to 5,321.43, 7,979.48 and 3,100.98

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Solution

The fourth proportional to 5,321.43, 7,979.48 and 3,100.98 is: 4,649.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.43 : 7,979.48 = 3,100.98 : x
  2. Step 2: Convert to fraction form
    5,321.43/7,979.48 = 3,100.98/x
  3. Step 3: Cross multiply
    5,321.43x = 7,979.48 × 3,100.98
  4. Step 4: Simplify right side
    5,321.43x = 24,744,192.39
  5. Step 5: Solve for x
    x = 24,744,192.39/5,321.43
  6. Step 6: Final answer
    x = 4,649.91

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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.