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Finding the Fourth Proportional to 3,362.45, 5,043.63 and 863.62

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Solution

The fourth proportional to 3,362.45, 5,043.63 and 863.62 is: 1,295.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,362.45 : 5,043.63 = 863.62 : x
  2. Step 2: Convert to fraction form
    3,362.45/5,043.63 = 863.62/x
  3. Step 3: Cross multiply
    3,362.45x = 5,043.63 × 863.62
  4. Step 4: Simplify right side
    3,362.45x = 4,355,770.37
  5. Step 5: Solve for x
    x = 4,355,770.37/3,362.45
  6. Step 6: Final answer
    x = 1,295.42

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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.