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Finding the Fourth Proportional to 2,997.87, 4,496.21 and 806.63

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Solution

The fourth proportional to 2,997.87, 4,496.21 and 806.63 is: 1,209.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,997.87 : 4,496.21 = 806.63 : x
  2. Step 2: Convert to fraction form
    2,997.87/4,496.21 = 806.63/x
  3. Step 3: Cross multiply
    2,997.87x = 4,496.21 × 806.63
  4. Step 4: Simplify right side
    2,997.87x = 3,626,751.36
  5. Step 5: Solve for x
    x = 3,626,751.36/2,997.87
  6. Step 6: Final answer
    x = 1,209.78

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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.