Home / 5,149.21-7,727.60-3,982.09

Finding the Fourth Proportional to 5,149.21, 7,727.60 and 3,982.09

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Solution

The fourth proportional to 5,149.21, 7,727.60 and 3,982.09 is: 5,976.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.21 : 7,727.60 = 3,982.09 : x
  2. Step 2: Convert to fraction form
    5,149.21/7,727.60 = 3,982.09/x
  3. Step 3: Cross multiply
    5,149.21x = 7,727.60 × 3,982.09
  4. Step 4: Simplify right side
    5,149.21x = 30,771,998.68
  5. Step 5: Solve for x
    x = 30,771,998.68/5,149.21
  6. Step 6: Final answer
    x = 5,976.06

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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.