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Finding the Fourth Proportional to 3,788, 5,685.24 and 1,481.12

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Solution

The fourth proportional to 3,788, 5,685.24 and 1,481.12 is: 2,222.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,788 : 5,685.24 = 1,481.12 : x
  2. Step 2: Convert to fraction form
    3,788/5,685.24 = 1,481.12/x
  3. Step 3: Cross multiply
    3,788x = 5,685.24 × 1,481.12
  4. Step 4: Simplify right side
    3,788x = 8,420,522.67
  5. Step 5: Solve for x
    x = 8,420,522.67/3,788
  6. Step 6: Final answer
    x = 2,222.95

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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.