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Finding the Fourth Proportional to 7,998.87, 12,000.20 and 3,616.32

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Solution

The fourth proportional to 7,998.87, 12,000.20 and 3,616.32 is: 5,425.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.87 : 12,000.20 = 3,616.32 : x
  2. Step 2: Convert to fraction form
    7,998.87/12,000.20 = 3,616.32/x
  3. Step 3: Cross multiply
    7,998.87x = 12,000.20 × 3,616.32
  4. Step 4: Simplify right side
    7,998.87x = 43,396,545.18
  5. Step 5: Solve for x
    x = 43,396,545.18/7,998.87
  6. Step 6: Final answer
    x = 5,425.33

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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.