Home / 3,781.22-5,217.63-2,102.21

Finding the Fourth Proportional to 3,781.22, 5,217.63 and 2,102.21

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Solution

The fourth proportional to 3,781.22, 5,217.63 and 2,102.21 is: 2,900.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.22 : 5,217.63 = 2,102.21 : x
  2. Step 2: Convert to fraction form
    3,781.22/5,217.63 = 2,102.21/x
  3. Step 3: Cross multiply
    3,781.22x = 5,217.63 × 2,102.21
  4. Step 4: Simplify right side
    3,781.22x = 10,968,527.87
  5. Step 5: Solve for x
    x = 10,968,527.87/3,781.22
  6. Step 6: Final answer
    x = 2,900.79

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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.