Home / 3,916.16-5,404.14-2,147.75

Finding the Fourth Proportional to 3,916.16, 5,404.14 and 2,147.75

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Solution

The fourth proportional to 3,916.16, 5,404.14 and 2,147.75 is: 2,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.16 : 5,404.14 = 2,147.75 : x
  2. Step 2: Convert to fraction form
    3,916.16/5,404.14 = 2,147.75/x
  3. Step 3: Cross multiply
    3,916.16x = 5,404.14 × 2,147.75
  4. Step 4: Simplify right side
    3,916.16x = 11,606,714.66
  5. Step 5: Solve for x
    x = 11,606,714.66/3,916.16
  6. Step 6: Final answer
    x = 2,963.80

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1.5x scale

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.