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Finding the Fourth Proportional to 3,846.67, 5,771.79 and 1,996.78

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Solution

The fourth proportional to 3,846.67, 5,771.79 and 1,996.78 is: 2,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,846.67 : 5,771.79 = 1,996.78 : x
  2. Step 2: Convert to fraction form
    3,846.67/5,771.79 = 1,996.78/x
  3. Step 3: Cross multiply
    3,846.67x = 5,771.79 × 1,996.78
  4. Step 4: Simplify right side
    3,846.67x = 11,524,994.84
  5. Step 5: Solve for x
    x = 11,524,994.84/3,846.67
  6. Step 6: Final answer
    x = 2,996.10

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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.