Home / 3,380.80-4,664.78-2,121.26

Finding the Fourth Proportional to 3,380.80, 4,664.78 and 2,121.26

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Solution

The fourth proportional to 3,380.80, 4,664.78 and 2,121.26 is: 2,926.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.80 : 4,664.78 = 2,121.26 : x
  2. Step 2: Convert to fraction form
    3,380.80/4,664.78 = 2,121.26/x
  3. Step 3: Cross multiply
    3,380.80x = 4,664.78 × 2,121.26
  4. Step 4: Simplify right side
    3,380.80x = 9,895,211.22
  5. Step 5: Solve for x
    x = 9,895,211.22/3,380.80
  6. Step 6: Final answer
    x = 2,926.88

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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.