Home / 2,213.29-3,318.39-826.25

Finding the Fourth Proportional to 2,213.29, 3,318.39 and 826.25

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Solution

The fourth proportional to 2,213.29, 3,318.39 and 826.25 is: 1,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,213.29 : 3,318.39 = 826.25 : x
  2. Step 2: Convert to fraction form
    2,213.29/3,318.39 = 826.25/x
  3. Step 3: Cross multiply
    2,213.29x = 3,318.39 × 826.25
  4. Step 4: Simplify right side
    2,213.29x = 2,741,824.14
  5. Step 5: Solve for x
    x = 2,741,824.14/2,213.29
  6. Step 6: Final answer
    x = 1,238.80

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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.