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Finding the Fourth Proportional to 3,781.65, 5,672.48 and 1,837.65

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Solution

The fourth proportional to 3,781.65, 5,672.48 and 1,837.65 is: 2,756.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.65 : 5,672.48 = 1,837.65 : x
  2. Step 2: Convert to fraction form
    3,781.65/5,672.48 = 1,837.65/x
  3. Step 3: Cross multiply
    3,781.65x = 5,672.48 × 1,837.65
  4. Step 4: Simplify right side
    3,781.65x = 10,424,023.68
  5. Step 5: Solve for x
    x = 10,424,023.68/3,781.65
  6. Step 6: Final answer
    x = 2,756.48

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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.