Home / 3,286.56-4,920.12-2,187.12

Finding the Fourth Proportional to 3,286.56, 4,920.12 and 2,187.12

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Solution

The fourth proportional to 3,286.56, 4,920.12 and 2,187.12 is: 3,274.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.56 : 4,920.12 = 2,187.12 : x
  2. Step 2: Convert to fraction form
    3,286.56/4,920.12 = 2,187.12/x
  3. Step 3: Cross multiply
    3,286.56x = 4,920.12 × 2,187.12
  4. Step 4: Simplify right side
    3,286.56x = 10,760,892.85
  5. Step 5: Solve for x
    x = 10,760,892.85/3,286.56
  6. Step 6: Final answer
    x = 3,274.21

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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.