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Finding the Fourth Proportional to 8,159.69, 12,241.11 and 3,479.62

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Solution

The fourth proportional to 8,159.69, 12,241.11 and 3,479.62 is: 5,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.69 : 12,241.11 = 3,479.62 : x
  2. Step 2: Convert to fraction form
    8,159.69/12,241.11 = 3,479.62/x
  3. Step 3: Cross multiply
    8,159.69x = 12,241.11 × 3,479.62
  4. Step 4: Simplify right side
    8,159.69x = 42,594,411.18
  5. Step 5: Solve for x
    x = 42,594,411.18/8,159.69
  6. Step 6: Final answer
    x = 5,220.10

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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.