Home / 7,022.91-9,691.68-3,879.09

Finding the Fourth Proportional to 7,022.91, 9,691.68 and 3,879.09

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Solution

The fourth proportional to 7,022.91, 9,691.68 and 3,879.09 is: 5,353.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,022.91 : 9,691.68 = 3,879.09 : x
  2. Step 2: Convert to fraction form
    7,022.91/9,691.68 = 3,879.09/x
  3. Step 3: Cross multiply
    7,022.91x = 9,691.68 × 3,879.09
  4. Step 4: Simplify right side
    7,022.91x = 37,594,898.97
  5. Step 5: Solve for x
    x = 37,594,898.97/7,022.91
  6. Step 6: Final answer
    x = 5,353.18

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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.