Home / 8,127.36-12,198.60-3,200.40

Finding the Fourth Proportional to 8,127.36, 12,198.60 and 3,200.40

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Solution

The fourth proportional to 8,127.36, 12,198.60 and 3,200.40 is: 4,803.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.36 : 12,198.60 = 3,200.40 : x
  2. Step 2: Convert to fraction form
    8,127.36/12,198.60 = 3,200.40/x
  3. Step 3: Cross multiply
    8,127.36x = 12,198.60 × 3,200.40
  4. Step 4: Simplify right side
    8,127.36x = 39,040,399.44
  5. Step 5: Solve for x
    x = 39,040,399.44/8,127.36
  6. Step 6: Final answer
    x = 4,803.58

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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.