Home / 8,128.54-12,195.73-3,195.44

Finding the Fourth Proportional to 8,128.54, 12,195.73 and 3,195.44

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Solution

The fourth proportional to 8,128.54, 12,195.73 and 3,195.44 is: 4,794.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.54 : 12,195.73 = 3,195.44 : x
  2. Step 2: Convert to fraction form
    8,128.54/12,195.73 = 3,195.44/x
  3. Step 3: Cross multiply
    8,128.54x = 12,195.73 × 3,195.44
  4. Step 4: Simplify right side
    8,128.54x = 38,970,723.47
  5. Step 5: Solve for x
    x = 38,970,723.47/8,128.54
  6. Step 6: Final answer
    x = 4,794.31

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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.