Home / 5,449.80-8,163.90-3,138.60

Finding the Fourth Proportional to 5,449.80, 8,163.90 and 3,138.60

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Solution

The fourth proportional to 5,449.80, 8,163.90 and 3,138.60 is: 4,701.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,449.80 : 8,163.90 = 3,138.60 : x
  2. Step 2: Convert to fraction form
    5,449.80/8,163.90 = 3,138.60/x
  3. Step 3: Cross multiply
    5,449.80x = 8,163.90 × 3,138.60
  4. Step 4: Simplify right side
    5,449.80x = 25,623,216.54
  5. Step 5: Solve for x
    x = 25,623,216.54/5,449.80
  6. Step 6: Final answer
    x = 4,701.68

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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.