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Finding the Fourth Proportional to 3,661.68, 5,489.91 and 1,712.82

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Solution

The fourth proportional to 3,661.68, 5,489.91 and 1,712.82 is: 2,568.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,661.68 : 5,489.91 = 1,712.82 : x
  2. Step 2: Convert to fraction form
    3,661.68/5,489.91 = 1,712.82/x
  3. Step 3: Cross multiply
    3,661.68x = 5,489.91 × 1,712.82
  4. Step 4: Simplify right side
    3,661.68x = 9,403,227.65
  5. Step 5: Solve for x
    x = 9,403,227.65/3,661.68
  6. Step 6: Final answer
    x = 2,568.01

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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.