Home / 8,128.89-12,191.96-2,284.13

Finding the Fourth Proportional to 8,128.89, 12,191.96 and 2,284.13

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Solution

The fourth proportional to 8,128.89, 12,191.96 and 2,284.13 is: 3,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.89 : 12,191.96 = 2,284.13 : x
  2. Step 2: Convert to fraction form
    8,128.89/12,191.96 = 2,284.13/x
  3. Step 3: Cross multiply
    8,128.89x = 12,191.96 × 2,284.13
  4. Step 4: Simplify right side
    8,128.89x = 27,847,949.21
  5. Step 5: Solve for x
    x = 27,847,949.21/8,128.89
  6. Step 6: Final answer
    x = 3,425.80

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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.