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Finding the Fourth Proportional to 7,998.38, 12,001.89 and 3,894.38

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Solution

The fourth proportional to 7,998.38, 12,001.89 and 3,894.38 is: 5,843.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,998.38 : 12,001.89 = 3,894.38 : x
  2. Step 2: Convert to fraction form
    7,998.38/12,001.89 = 3,894.38/x
  3. Step 3: Cross multiply
    7,998.38x = 12,001.89 × 3,894.38
  4. Step 4: Simplify right side
    7,998.38x = 46,739,860.37
  5. Step 5: Solve for x
    x = 46,739,860.37/7,998.38
  6. Step 6: Final answer
    x = 5,843.67

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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.