Home / 3,998.75-5,519.07-2,320.52

Finding the Fourth Proportional to 3,998.75, 5,519.07 and 2,320.52

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Solution

The fourth proportional to 3,998.75, 5,519.07 and 2,320.52 is: 3,202.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.75 : 5,519.07 = 2,320.52 : x
  2. Step 2: Convert to fraction form
    3,998.75/5,519.07 = 2,320.52/x
  3. Step 3: Cross multiply
    3,998.75x = 5,519.07 × 2,320.52
  4. Step 4: Simplify right side
    3,998.75x = 12,807,112.32
  5. Step 5: Solve for x
    x = 12,807,112.32/3,998.75
  6. Step 6: Final answer
    x = 3,202.78

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Half scale
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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.