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Finding the Fourth Proportional to 3,803.78, 5,706.18 and 1,338.14

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Solution

The fourth proportional to 3,803.78, 5,706.18 and 1,338.14 is: 2,007.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,803.78 : 5,706.18 = 1,338.14 : x
  2. Step 2: Convert to fraction form
    3,803.78/5,706.18 = 1,338.14/x
  3. Step 3: Cross multiply
    3,803.78x = 5,706.18 × 1,338.14
  4. Step 4: Simplify right side
    3,803.78x = 7,635,681.97
  5. Step 5: Solve for x
    x = 7,635,681.97/3,803.78
  6. Step 6: Final answer
    x = 2,007.39

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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.