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Finding the Fourth Proportional to 6,809.12, 10,213.64 and 1,879.44

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Solution

The fourth proportional to 6,809.12, 10,213.64 and 1,879.44 is: 2,819.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,809.12 : 10,213.64 = 1,879.44 : x
  2. Step 2: Convert to fraction form
    6,809.12/10,213.64 = 1,879.44/x
  3. Step 3: Cross multiply
    6,809.12x = 10,213.64 × 1,879.44
  4. Step 4: Simplify right side
    6,809.12x = 19,195,923.56
  5. Step 5: Solve for x
    x = 19,195,923.56/6,809.12
  6. Step 6: Final answer
    x = 2,819.15

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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.