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Finding the Fourth Proportional to 7,991.99, 11,994.41 and 3,609.83

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Solution

The fourth proportional to 7,991.99, 11,994.41 and 3,609.83 is: 5,417.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.99 : 11,994.41 = 3,609.83 : x
  2. Step 2: Convert to fraction form
    7,991.99/11,994.41 = 3,609.83/x
  3. Step 3: Cross multiply
    7,991.99x = 11,994.41 × 3,609.83
  4. Step 4: Simplify right side
    7,991.99x = 43,297,781.05
  5. Step 5: Solve for x
    x = 43,297,781.05/7,991.99
  6. Step 6: Final answer
    x = 5,417.65

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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.