Home / 8,102.96-11,170.32-6,979.04

Finding the Fourth Proportional to 8,102.96, 11,170.32 and 6,979.04

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Solution

The fourth proportional to 8,102.96, 11,170.32 and 6,979.04 is: 9,620.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,102.96 : 11,170.32 = 6,979.04 : x
  2. Step 2: Convert to fraction form
    8,102.96/11,170.32 = 6,979.04/x
  3. Step 3: Cross multiply
    8,102.96x = 11,170.32 × 6,979.04
  4. Step 4: Simplify right side
    8,102.96x = 77,958,110.09
  5. Step 5: Solve for x
    x = 77,958,110.09/8,102.96
  6. Step 6: Final answer
    x = 9,620.94

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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.