Home / 8,021.19-12,028.70-2,755.21

Finding the Fourth Proportional to 8,021.19, 12,028.70 and 2,755.21

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Solution

The fourth proportional to 8,021.19, 12,028.70 and 2,755.21 is: 4,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,021.19 : 12,028.70 = 2,755.21 : x
  2. Step 2: Convert to fraction form
    8,021.19/12,028.70 = 2,755.21/x
  3. Step 3: Cross multiply
    8,021.19x = 12,028.70 × 2,755.21
  4. Step 4: Simplify right side
    8,021.19x = 33,141,580.75
  5. Step 5: Solve for x
    x = 33,141,580.75/8,021.19
  6. Step 6: Final answer
    x = 4,131.76

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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.