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Finding the Fourth Proportional to 7,998.19, 11,998.11 and 3,071.95

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Solution

The fourth proportional to 7,998.19, 11,998.11 and 3,071.95 is: 4,608.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.19 : 11,998.11 = 3,071.95 : x
  2. Step 2: Convert to fraction form
    7,998.19/11,998.11 = 3,071.95/x
  3. Step 3: Cross multiply
    7,998.19x = 11,998.11 × 3,071.95
  4. Step 4: Simplify right side
    7,998.19x = 36,857,594.01
  5. Step 5: Solve for x
    x = 36,857,594.01/7,998.19
  6. Step 6: Final answer
    x = 4,608.24

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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.