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Finding the Fourth Proportional to 7,998.99, 12,004.90 and 3,616.82

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Solution

The fourth proportional to 7,998.99, 12,004.90 and 3,616.82 is: 5,428.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.99 : 12,004.90 = 3,616.82 : x
  2. Step 2: Convert to fraction form
    7,998.99/12,004.90 = 3,616.82/x
  3. Step 3: Cross multiply
    7,998.99x = 12,004.90 × 3,616.82
  4. Step 4: Simplify right side
    7,998.99x = 43,419,583.39
  5. Step 5: Solve for x
    x = 43,419,583.39/7,998.99
  6. Step 6: Final answer
    x = 5,428.13

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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.