Home / 3,916.09-5,404.25-2,147.66

Finding the Fourth Proportional to 3,916.09, 5,404.25 and 2,147.66

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Solution

The fourth proportional to 3,916.09, 5,404.25 and 2,147.66 is: 2,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.09 : 5,404.25 = 2,147.66 : x
  2. Step 2: Convert to fraction form
    3,916.09/5,404.25 = 2,147.66/x
  3. Step 3: Cross multiply
    3,916.09x = 5,404.25 × 2,147.66
  4. Step 4: Simplify right side
    3,916.09x = 11,606,491.56
  5. Step 5: Solve for x
    x = 11,606,491.56/3,916.09
  6. Step 6: Final answer
    x = 2,963.80

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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.