Home / 3,883.87-5,359.62-2,115.46

Finding the Fourth Proportional to 3,883.87, 5,359.62 and 2,115.46

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Solution

The fourth proportional to 3,883.87, 5,359.62 and 2,115.46 is: 2,919.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,883.87 : 5,359.62 = 2,115.46 : x
  2. Step 2: Convert to fraction form
    3,883.87/5,359.62 = 2,115.46/x
  3. Step 3: Cross multiply
    3,883.87x = 5,359.62 × 2,115.46
  4. Step 4: Simplify right side
    3,883.87x = 11,338,061.73
  5. Step 5: Solve for x
    x = 11,338,061.73/3,883.87
  6. Step 6: Final answer
    x = 2,919.27

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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.