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Finding the Fourth Proportional to 10,608, 15,912 and 2,816.88

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Solution

The fourth proportional to 10,608, 15,912 and 2,816.88 is: 4,225.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,608 : 15,912 = 2,816.88 : x
  2. Step 2: Convert to fraction form
    10,608/15,912 = 2,816.88/x
  3. Step 3: Cross multiply
    10,608x = 15,912 × 2,816.88
  4. Step 4: Simplify right side
    10,608x = 44,822,194.56
  5. Step 5: Solve for x
    x = 44,822,194.56/10,608
  6. Step 6: Final answer
    x = 4,225.32

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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.