Home / 5,217.12-7,825.68-1,321.83

Finding the Fourth Proportional to 5,217.12, 7,825.68 and 1,321.83

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Solution

The fourth proportional to 5,217.12, 7,825.68 and 1,321.83 is: 1,982.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.12 : 7,825.68 = 1,321.83 : x
  2. Step 2: Convert to fraction form
    5,217.12/7,825.68 = 1,321.83/x
  3. Step 3: Cross multiply
    5,217.12x = 7,825.68 × 1,321.83
  4. Step 4: Simplify right side
    5,217.12x = 10,344,218.59
  5. Step 5: Solve for x
    x = 10,344,218.59/5,217.12
  6. Step 6: Final answer
    x = 1,982.75

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Similar ratio
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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.