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Finding the Fourth Proportional to 3,999.11, 5,998.66 and 2,278.67

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Solution

The fourth proportional to 3,999.11, 5,998.66 and 2,278.67 is: 3,418.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.11 : 5,998.66 = 2,278.67 : x
  2. Step 2: Convert to fraction form
    3,999.11/5,998.66 = 2,278.67/x
  3. Step 3: Cross multiply
    3,999.11x = 5,998.66 × 2,278.67
  4. Step 4: Simplify right side
    3,999.11x = 13,668,930.89
  5. Step 5: Solve for x
    x = 13,668,930.89/3,999.11
  6. Step 6: Final answer
    x = 3,418.00

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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.