Home / 8,213.85-11,335.68-5,229.81

Finding the Fourth Proportional to 8,213.85, 11,335.68 and 5,229.81

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Solution

The fourth proportional to 8,213.85, 11,335.68 and 5,229.81 is: 7,217.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,213.85 : 11,335.68 = 5,229.81 : x
  2. Step 2: Convert to fraction form
    8,213.85/11,335.68 = 5,229.81/x
  3. Step 3: Cross multiply
    8,213.85x = 11,335.68 × 5,229.81
  4. Step 4: Simplify right side
    8,213.85x = 59,283,452.62
  5. Step 5: Solve for x
    x = 59,283,452.62/8,213.85
  6. Step 6: Final answer
    x = 7,217.50

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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.