Home / 3,999.24-5,518.80-2,230.56

Finding the Fourth Proportional to 3,999.24, 5,518.80 and 2,230.56

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Solution

The fourth proportional to 3,999.24, 5,518.80 and 2,230.56 is: 3,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.24 : 5,518.80 = 2,230.56 : x
  2. Step 2: Convert to fraction form
    3,999.24/5,518.80 = 2,230.56/x
  3. Step 3: Cross multiply
    3,999.24x = 5,518.80 × 2,230.56
  4. Step 4: Simplify right side
    3,999.24x = 12,310,014.53
  5. Step 5: Solve for x
    x = 12,310,014.53/3,999.24
  6. Step 6: Final answer
    x = 3,078.09

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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.