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Finding the Fourth Proportional to 6,879.92, 9,491.97 and 4,192.07

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Solution

The fourth proportional to 6,879.92, 9,491.97 and 4,192.07 is: 5,783.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.92 : 9,491.97 = 4,192.07 : x
  2. Step 2: Convert to fraction form
    6,879.92/9,491.97 = 4,192.07/x
  3. Step 3: Cross multiply
    6,879.92x = 9,491.97 × 4,192.07
  4. Step 4: Simplify right side
    6,879.92x = 39,791,042.13
  5. Step 5: Solve for x
    x = 39,791,042.13/6,879.92
  6. Step 6: Final answer
    x = 5,783.65

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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.