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Finding the Fourth Proportional to 8,021.99, 12,028.36 and 3,090.99

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Solution

The fourth proportional to 8,021.99, 12,028.36 and 3,090.99 is: 4,634.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,021.99 : 12,028.36 = 3,090.99 : x
  2. Step 2: Convert to fraction form
    8,021.99/12,028.36 = 3,090.99/x
  3. Step 3: Cross multiply
    8,021.99x = 12,028.36 × 3,090.99
  4. Step 4: Simplify right side
    8,021.99x = 37,179,540.48
  5. Step 5: Solve for x
    x = 37,179,540.48/8,021.99
  6. Step 6: Final answer
    x = 4,634.71

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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.