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Finding the Fourth Proportional to 3,998.96, 5,996.61 and 1,919.94

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Solution

The fourth proportional to 3,998.96, 5,996.61 and 1,919.94 is: 2,879.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.96 : 5,996.61 = 1,919.94 : x
  2. Step 2: Convert to fraction form
    3,998.96/5,996.61 = 1,919.94/x
  3. Step 3: Cross multiply
    3,998.96x = 5,996.61 × 1,919.94
  4. Step 4: Simplify right side
    3,998.96x = 11,513,131.40
  5. Step 5: Solve for x
    x = 11,513,131.40/3,998.96
  6. Step 6: Final answer
    x = 2,879.03

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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.