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Finding the Fourth Proportional to 3,757.68, 5,636.70 and 1,449

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Solution

The fourth proportional to 3,757.68, 5,636.70 and 1,449 is: 2,173.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,757.68 : 5,636.70 = 1,449 : x
  2. Step 2: Convert to fraction form
    3,757.68/5,636.70 = 1,449/x
  3. Step 3: Cross multiply
    3,757.68x = 5,636.70 × 1,449
  4. Step 4: Simplify right side
    3,757.68x = 8,167,578.30
  5. Step 5: Solve for x
    x = 8,167,578.30/3,757.68
  6. Step 6: Final answer
    x = 2,173.57

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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.