Home / 3,781.75-5,219.64-2,103.73

Finding the Fourth Proportional to 3,781.75, 5,219.64 and 2,103.73

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Solution

The fourth proportional to 3,781.75, 5,219.64 and 2,103.73 is: 2,903.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.75 : 5,219.64 = 2,103.73 : x
  2. Step 2: Convert to fraction form
    3,781.75/5,219.64 = 2,103.73/x
  3. Step 3: Cross multiply
    3,781.75x = 5,219.64 × 2,103.73
  4. Step 4: Simplify right side
    3,781.75x = 10,980,713.26
  5. Step 5: Solve for x
    x = 10,980,713.26/3,781.75
  6. Step 6: Final answer
    x = 2,903.61

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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.