Home / 3,454.75-5,175.98-1,990.88

Finding the Fourth Proportional to 3,454.75, 5,175.98 and 1,990.88

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Solution

The fourth proportional to 3,454.75, 5,175.98 and 1,990.88 is: 2,982.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,454.75 : 5,175.98 = 1,990.88 : x
  2. Step 2: Convert to fraction form
    3,454.75/5,175.98 = 1,990.88/x
  3. Step 3: Cross multiply
    3,454.75x = 5,175.98 × 1,990.88
  4. Step 4: Simplify right side
    3,454.75x = 10,304,755.06
  5. Step 5: Solve for x
    x = 10,304,755.06/3,454.75
  6. Step 6: Final answer
    x = 2,982.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.