Home / 3,999.60-5,518.83-2,321.10

Finding the Fourth Proportional to 3,999.60, 5,518.83 and 2,321.10

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Solution

The fourth proportional to 3,999.60, 5,518.83 and 2,321.10 is: 3,202.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.60 : 5,518.83 = 2,321.10 : x
  2. Step 2: Convert to fraction form
    3,999.60/5,518.83 = 2,321.10/x
  3. Step 3: Cross multiply
    3,999.60x = 5,518.83 × 2,321.10
  4. Step 4: Simplify right side
    3,999.60x = 12,809,756.31
  5. Step 5: Solve for x
    x = 12,809,756.31/3,999.60
  6. Step 6: Final answer
    x = 3,202.76

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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.