Home / 5,418.43-8,122.78-1,954.87

Finding the Fourth Proportional to 5,418.43, 8,122.78 and 1,954.87

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Solution

The fourth proportional to 5,418.43, 8,122.78 and 1,954.87 is: 2,930.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.43 : 8,122.78 = 1,954.87 : x
  2. Step 2: Convert to fraction form
    5,418.43/8,122.78 = 1,954.87/x
  3. Step 3: Cross multiply
    5,418.43x = 8,122.78 × 1,954.87
  4. Step 4: Simplify right side
    5,418.43x = 15,878,978.94
  5. Step 5: Solve for x
    x = 15,878,978.94/5,418.43
  6. Step 6: Final answer
    x = 2,930.55

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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.