Home / 3,849.78-5,775.12-1,384.39

Finding the Fourth Proportional to 3,849.78, 5,775.12 and 1,384.39

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Solution

The fourth proportional to 3,849.78, 5,775.12 and 1,384.39 is: 2,076.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,849.78 : 5,775.12 = 1,384.39 : x
  2. Step 2: Convert to fraction form
    3,849.78/5,775.12 = 1,384.39/x
  3. Step 3: Cross multiply
    3,849.78x = 5,775.12 × 1,384.39
  4. Step 4: Simplify right side
    3,849.78x = 7,995,018.38
  5. Step 5: Solve for x
    x = 7,995,018.38/3,849.78
  6. Step 6: Final answer
    x = 2,076.75

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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.