Home / 3,916.13-5,404.38-2,147.86

Finding the Fourth Proportional to 3,916.13, 5,404.38 and 2,147.86

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Solution

The fourth proportional to 3,916.13, 5,404.38 and 2,147.86 is: 2,964.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.13 : 5,404.38 = 2,147.86 : x
  2. Step 2: Convert to fraction form
    3,916.13/5,404.38 = 2,147.86/x
  3. Step 3: Cross multiply
    3,916.13x = 5,404.38 × 2,147.86
  4. Step 4: Simplify right side
    3,916.13x = 11,607,851.63
  5. Step 5: Solve for x
    x = 11,607,851.63/3,916.13
  6. Step 6: Final answer
    x = 2,964.11

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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.