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Finding the Fourth Proportional to 6,392.19, 8,821.42 and 3,481.94

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Solution

The fourth proportional to 6,392.19, 8,821.42 and 3,481.94 is: 4,805.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,392.19 : 8,821.42 = 3,481.94 : x
  2. Step 2: Convert to fraction form
    6,392.19/8,821.42 = 3,481.94/x
  3. Step 3: Cross multiply
    6,392.19x = 8,821.42 × 3,481.94
  4. Step 4: Simplify right side
    6,392.19x = 30,715,655.15
  5. Step 5: Solve for x
    x = 30,715,655.15/6,392.19
  6. Step 6: Final answer
    x = 4,805.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.