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Finding the Fourth Proportional to 3,712.66, 5,568.81 and 1,115.50

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Solution

The fourth proportional to 3,712.66, 5,568.81 and 1,115.50 is: 1,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.66 : 5,568.81 = 1,115.50 : x
  2. Step 2: Convert to fraction form
    3,712.66/5,568.81 = 1,115.50/x
  3. Step 3: Cross multiply
    3,712.66x = 5,568.81 × 1,115.50
  4. Step 4: Simplify right side
    3,712.66x = 6,212,007.56
  5. Step 5: Solve for x
    x = 6,212,007.56/3,712.66
  6. Step 6: Final answer
    x = 1,673.20

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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.