Home / 3,999.04-5,518.72-2,230.80

Finding the Fourth Proportional to 3,999.04, 5,518.72 and 2,230.80

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Solution

The fourth proportional to 3,999.04, 5,518.72 and 2,230.80 is: 3,078.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.04 : 5,518.72 = 2,230.80 : x
  2. Step 2: Convert to fraction form
    3,999.04/5,518.72 = 2,230.80/x
  3. Step 3: Cross multiply
    3,999.04x = 5,518.72 × 2,230.80
  4. Step 4: Simplify right side
    3,999.04x = 12,311,160.58
  5. Step 5: Solve for x
    x = 12,311,160.58/3,999.04
  6. Step 6: Final answer
    x = 3,078.53

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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.