Home / 3,380.97-4,671.64-2,790.48

Finding the Fourth Proportional to 3,380.97, 4,671.64 and 2,790.48

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Solution

The fourth proportional to 3,380.97, 4,671.64 and 2,790.48 is: 3,855.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.97 : 4,671.64 = 2,790.48 : x
  2. Step 2: Convert to fraction form
    3,380.97/4,671.64 = 2,790.48/x
  3. Step 3: Cross multiply
    3,380.97x = 4,671.64 × 2,790.48
  4. Step 4: Simplify right side
    3,380.97x = 13,036,087.80
  5. Step 5: Solve for x
    x = 13,036,087.80/3,380.97
  6. Step 6: Final answer
    x = 3,855.73

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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.