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Finding the Fourth Proportional to 2,949.68, 4,424.41 and 758.43

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Solution

The fourth proportional to 2,949.68, 4,424.41 and 758.43 is: 1,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,949.68 : 4,424.41 = 758.43 : x
  2. Step 2: Convert to fraction form
    2,949.68/4,424.41 = 758.43/x
  3. Step 3: Cross multiply
    2,949.68x = 4,424.41 × 758.43
  4. Step 4: Simplify right side
    2,949.68x = 3,355,605.28
  5. Step 5: Solve for x
    x = 3,355,605.28/2,949.68
  6. Step 6: Final answer
    x = 1,137.62

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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.