Home / 5,078.78-7,618.11-2,614.28

Finding the Fourth Proportional to 5,078.78, 7,618.11 and 2,614.28

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Solution

The fourth proportional to 5,078.78, 7,618.11 and 2,614.28 is: 3,921.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.78 : 7,618.11 = 2,614.28 : x
  2. Step 2: Convert to fraction form
    5,078.78/7,618.11 = 2,614.28/x
  3. Step 3: Cross multiply
    5,078.78x = 7,618.11 × 2,614.28
  4. Step 4: Simplify right side
    5,078.78x = 19,915,872.61
  5. Step 5: Solve for x
    x = 19,915,872.61/5,078.78
  6. Step 6: Final answer
    x = 3,921.39

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1.5x scale

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.