Home / 5,192.78-7,786.64-2,418.80

Finding the Fourth Proportional to 5,192.78, 7,786.64 and 2,418.80

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Solution

The fourth proportional to 5,192.78, 7,786.64 and 2,418.80 is: 3,627.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,192.78 : 7,786.64 = 2,418.80 : x
  2. Step 2: Convert to fraction form
    5,192.78/7,786.64 = 2,418.80/x
  3. Step 3: Cross multiply
    5,192.78x = 7,786.64 × 2,418.80
  4. Step 4: Simplify right side
    5,192.78x = 18,834,291.95
  5. Step 5: Solve for x
    x = 18,834,291.95/5,192.78
  6. Step 6: Final answer
    x = 3,627.02

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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.