Home / 3,380.87-4,665.94-2,122.88

Finding the Fourth Proportional to 3,380.87, 4,665.94 and 2,122.88

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Solution

The fourth proportional to 3,380.87, 4,665.94 and 2,122.88 is: 2,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.87 : 4,665.94 = 2,122.88 : x
  2. Step 2: Convert to fraction form
    3,380.87/4,665.94 = 2,122.88/x
  3. Step 3: Cross multiply
    3,380.87x = 4,665.94 × 2,122.88
  4. Step 4: Simplify right side
    3,380.87x = 9,905,202.07
  5. Step 5: Solve for x
    x = 9,905,202.07/3,380.87
  6. Step 6: Final answer
    x = 2,929.78

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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.