Home / 5,087.35-7,629.20-3,993.85

Finding the Fourth Proportional to 5,087.35, 7,629.20 and 3,993.85

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Solution

The fourth proportional to 5,087.35, 7,629.20 and 3,993.85 is: 5,989.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,087.35 : 7,629.20 = 3,993.85 : x
  2. Step 2: Convert to fraction form
    5,087.35/7,629.20 = 3,993.85/x
  3. Step 3: Cross multiply
    5,087.35x = 7,629.20 × 3,993.85
  4. Step 4: Simplify right side
    5,087.35x = 30,469,841.38
  5. Step 5: Solve for x
    x = 30,469,841.38/5,087.35
  6. Step 6: Final answer
    x = 5,989.34

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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.