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Finding the Fourth Proportional to 1,994.83, 2,991.68 and 1,192.88

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Solution

The fourth proportional to 1,994.83, 2,991.68 and 1,192.88 is: 1,788.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,994.83 : 2,991.68 = 1,192.88 : x
  2. Step 2: Convert to fraction form
    1,994.83/2,991.68 = 1,192.88/x
  3. Step 3: Cross multiply
    1,994.83x = 2,991.68 × 1,192.88
  4. Step 4: Simplify right side
    1,994.83x = 3,568,711.11
  5. Step 5: Solve for x
    x = 3,568,711.11/1,994.83
  6. Step 6: Final answer
    x = 1,788.98

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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.