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Finding the Fourth Proportional to 7,994.41, 11,991.21 and 2,799.88

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Solution

The fourth proportional to 7,994.41, 11,991.21 and 2,799.88 is: 4,199.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.41 : 11,991.21 = 2,799.88 : x
  2. Step 2: Convert to fraction form
    7,994.41/11,991.21 = 2,799.88/x
  3. Step 3: Cross multiply
    7,994.41x = 11,991.21 × 2,799.88
  4. Step 4: Simplify right side
    7,994.41x = 33,573,949.05
  5. Step 5: Solve for x
    x = 33,573,949.05/7,994.41
  6. Step 6: Final answer
    x = 4,199.68

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1.5x scale

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.