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Finding the Fourth Proportional to 6,908.92, 10,365 and 3,213.72

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Solution

The fourth proportional to 6,908.92, 10,365 and 3,213.72 is: 4,821.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,908.92 : 10,365 = 3,213.72 : x
  2. Step 2: Convert to fraction form
    6,908.92/10,365 = 3,213.72/x
  3. Step 3: Cross multiply
    6,908.92x = 10,365 × 3,213.72
  4. Step 4: Simplify right side
    6,908.92x = 33,310,207.80
  5. Step 5: Solve for x
    x = 33,310,207.80/6,908.92
  6. Step 6: Final answer
    x = 4,821.33

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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.