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Finding the Fourth Proportional to 3,375.91, 5,063.99 and 910.79

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Solution

The fourth proportional to 3,375.91, 5,063.99 and 910.79 is: 1,366.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.91 : 5,063.99 = 910.79 : x
  2. Step 2: Convert to fraction form
    3,375.91/5,063.99 = 910.79/x
  3. Step 3: Cross multiply
    3,375.91x = 5,063.99 × 910.79
  4. Step 4: Simplify right side
    3,375.91x = 4,612,231.45
  5. Step 5: Solve for x
    x = 4,612,231.45/3,375.91
  6. Step 6: Final answer
    x = 1,366.22

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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.