Home / 8,128.20-12,192.34-2,284.86

Finding the Fourth Proportional to 8,128.20, 12,192.34 and 2,284.86

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Solution

The fourth proportional to 8,128.20, 12,192.34 and 2,284.86 is: 3,427.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.20 : 12,192.34 = 2,284.86 : x
  2. Step 2: Convert to fraction form
    8,128.20/12,192.34 = 2,284.86/x
  3. Step 3: Cross multiply
    8,128.20x = 12,192.34 × 2,284.86
  4. Step 4: Simplify right side
    8,128.20x = 27,857,789.97
  5. Step 5: Solve for x
    x = 27,857,789.97/8,128.20
  6. Step 6: Final answer
    x = 3,427.30

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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.