Home / 8,100.70-11,175.03-6,979.69

Finding the Fourth Proportional to 8,100.70, 11,175.03 and 6,979.69

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Solution

The fourth proportional to 8,100.70, 11,175.03 and 6,979.69 is: 9,628.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,100.70 : 11,175.03 = 6,979.69 : x
  2. Step 2: Convert to fraction form
    8,100.70/11,175.03 = 6,979.69/x
  3. Step 3: Cross multiply
    8,100.70x = 11,175.03 × 6,979.69
  4. Step 4: Simplify right side
    8,100.70x = 77,998,245.14
  5. Step 5: Solve for x
    x = 77,998,245.14/8,100.70
  6. Step 6: Final answer
    x = 9,628.58

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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.