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Finding the Fourth Proportional to 10,608.92, 15,913.47 and 3,213.96

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Solution

The fourth proportional to 10,608.92, 15,913.47 and 3,213.96 is: 4,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,608.92 : 15,913.47 = 3,213.96 : x
  2. Step 2: Convert to fraction form
    10,608.92/15,913.47 = 3,213.96/x
  3. Step 3: Cross multiply
    10,608.92x = 15,913.47 × 3,213.96
  4. Step 4: Simplify right side
    10,608.92x = 51,145,256.04
  5. Step 5: Solve for x
    x = 51,145,256.04/10,608.92
  6. Step 6: Final answer
    x = 4,820.97

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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.