Home / 3,837.78-5,296.11-2,181.78

Finding the Fourth Proportional to 3,837.78, 5,296.11 and 2,181.78

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Solution

The fourth proportional to 3,837.78, 5,296.11 and 2,181.78 is: 3,010.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,837.78 : 5,296.11 = 2,181.78 : x
  2. Step 2: Convert to fraction form
    3,837.78/5,296.11 = 2,181.78/x
  3. Step 3: Cross multiply
    3,837.78x = 5,296.11 × 2,181.78
  4. Step 4: Simplify right side
    3,837.78x = 11,554,946.88
  5. Step 5: Solve for x
    x = 11,554,946.88/3,837.78
  6. Step 6: Final answer
    x = 3,010.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.