Home / 3,999.75-5,520.45-2,321.52

Finding the Fourth Proportional to 3,999.75, 5,520.45 and 2,321.52

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Solution

The fourth proportional to 3,999.75, 5,520.45 and 2,321.52 is: 3,204.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,999.75 : 5,520.45 = 2,321.52 : x
  2. Step 2: Convert to fraction form
    3,999.75/5,520.45 = 2,321.52/x
  3. Step 3: Cross multiply
    3,999.75x = 5,520.45 × 2,321.52
  4. Step 4: Simplify right side
    3,999.75x = 12,815,835.08
  5. Step 5: Solve for x
    x = 12,815,835.08/3,999.75
  6. Step 6: Final answer
    x = 3,204.16

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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.