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Finding the Fourth Proportional to 8,841.60, 12,199.20 and 5,694

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Solution

The fourth proportional to 8,841.60, 12,199.20 and 5,694 is: 7,856.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,841.60 : 12,199.20 = 5,694 : x
  2. Step 2: Convert to fraction form
    8,841.60/12,199.20 = 5,694/x
  3. Step 3: Cross multiply
    8,841.60x = 12,199.20 × 5,694
  4. Step 4: Simplify right side
    8,841.60x = 69,462,244.80
  5. Step 5: Solve for x
    x = 69,462,244.80/8,841.60
  6. Step 6: Final answer
    x = 7,856.30

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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.