Home / 3,999.07-5,518.83-2,230.79

Finding the Fourth Proportional to 3,999.07, 5,518.83 and 2,230.79

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Solution

The fourth proportional to 3,999.07, 5,518.83 and 2,230.79 is: 3,078.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.07 : 5,518.83 = 2,230.79 : x
  2. Step 2: Convert to fraction form
    3,999.07/5,518.83 = 2,230.79/x
  3. Step 3: Cross multiply
    3,999.07x = 5,518.83 × 2,230.79
  4. Step 4: Simplify right side
    3,999.07x = 12,311,372.94
  5. Step 5: Solve for x
    x = 12,311,372.94/3,999.07
  6. Step 6: Final answer
    x = 3,078.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.