Home / 11,919.49-17,879.87-3,154.17

Finding the Fourth Proportional to 11,919.49, 17,879.87 and 3,154.17

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Solution

The fourth proportional to 11,919.49, 17,879.87 and 3,154.17 is: 4,731.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.49 : 17,879.87 = 3,154.17 : x
  2. Step 2: Convert to fraction form
    11,919.49/17,879.87 = 3,154.17/x
  3. Step 3: Cross multiply
    11,919.49x = 17,879.87 × 3,154.17
  4. Step 4: Simplify right side
    11,919.49x = 56,396,149.56
  5. Step 5: Solve for x
    x = 56,396,149.56/11,919.49
  6. Step 6: Final answer
    x = 4,731.42

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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.