Home / 3,885.11-5,361.39-2,116.73

Finding the Fourth Proportional to 3,885.11, 5,361.39 and 2,116.73

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Solution

The fourth proportional to 3,885.11, 5,361.39 and 2,116.73 is: 2,921.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.11 : 5,361.39 = 2,116.73 : x
  2. Step 2: Convert to fraction form
    3,885.11/5,361.39 = 2,116.73/x
  3. Step 3: Cross multiply
    3,885.11x = 5,361.39 × 2,116.73
  4. Step 4: Simplify right side
    3,885.11x = 11,348,628.46
  5. Step 5: Solve for x
    x = 11,348,628.46/3,885.11
  6. Step 6: Final answer
    x = 2,921.05

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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.