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Finding the Fourth Proportional to 5,767.92, 8,640.94 and 3,422.97

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Solution

The fourth proportional to 5,767.92, 8,640.94 and 3,422.97 is: 5,127.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,767.92 : 8,640.94 = 3,422.97 : x
  2. Step 2: Convert to fraction form
    5,767.92/8,640.94 = 3,422.97/x
  3. Step 3: Cross multiply
    5,767.92x = 8,640.94 × 3,422.97
  4. Step 4: Simplify right side
    5,767.92x = 29,577,678.39
  5. Step 5: Solve for x
    x = 29,577,678.39/5,767.92
  6. Step 6: Final answer
    x = 5,127.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.