Home / 2,961.78-4,083.42-2,428.71

Finding the Fourth Proportional to 2,961.78, 4,083.42 and 2,428.71

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Solution

The fourth proportional to 2,961.78, 4,083.42 and 2,428.71 is: 3,348.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,961.78 : 4,083.42 = 2,428.71 : x
  2. Step 2: Convert to fraction form
    2,961.78/4,083.42 = 2,428.71/x
  3. Step 3: Cross multiply
    2,961.78x = 4,083.42 × 2,428.71
  4. Step 4: Simplify right side
    2,961.78x = 9,917,442.99
  5. Step 5: Solve for x
    x = 9,917,442.99/2,961.78
  6. Step 6: Final answer
    x = 3,348.47

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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.