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Finding the Fourth Proportional to 7,816.60, 10,786.92 and 4,279.73

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Solution

The fourth proportional to 7,816.60, 10,786.92 and 4,279.73 is: 5,906.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.60 : 10,786.92 = 4,279.73 : x
  2. Step 2: Convert to fraction form
    7,816.60/10,786.92 = 4,279.73/x
  3. Step 3: Cross multiply
    7,816.60x = 10,786.92 × 4,279.73
  4. Step 4: Simplify right side
    7,816.60x = 46,165,105.13
  5. Step 5: Solve for x
    x = 46,165,105.13/7,816.60
  6. Step 6: Final answer
    x = 5,906.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.