Home / 5,418.62-8,127.10-1,720.37

Finding the Fourth Proportional to 5,418.62, 8,127.10 and 1,720.37

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Solution

The fourth proportional to 5,418.62, 8,127.10 and 1,720.37 is: 2,580.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.62 : 8,127.10 = 1,720.37 : x
  2. Step 2: Convert to fraction form
    5,418.62/8,127.10 = 1,720.37/x
  3. Step 3: Cross multiply
    5,418.62x = 8,127.10 × 1,720.37
  4. Step 4: Simplify right side
    5,418.62x = 13,981,619.03
  5. Step 5: Solve for x
    x = 13,981,619.03/5,418.62
  6. Step 6: Final answer
    x = 2,580.29

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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.