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Finding the Fourth Proportional to 3,003.87, 4,505.44 and 812.77

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Solution

The fourth proportional to 3,003.87, 4,505.44 and 812.77 is: 1,219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.87 : 4,505.44 = 812.77 : x
  2. Step 2: Convert to fraction form
    3,003.87/4,505.44 = 812.77/x
  3. Step 3: Cross multiply
    3,003.87x = 4,505.44 × 812.77
  4. Step 4: Simplify right side
    3,003.87x = 3,661,882.87
  5. Step 5: Solve for x
    x = 3,661,882.87/3,003.87
  6. Step 6: Final answer
    x = 1,219.06

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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.