Home / 5,418.43-8,127.60-1,720.94

Finding the Fourth Proportional to 5,418.43, 8,127.60 and 1,720.94

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Solution

The fourth proportional to 5,418.43, 8,127.60 and 1,720.94 is: 2,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.43 : 8,127.60 = 1,720.94 : x
  2. Step 2: Convert to fraction form
    5,418.43/8,127.60 = 1,720.94/x
  3. Step 3: Cross multiply
    5,418.43x = 8,127.60 × 1,720.94
  4. Step 4: Simplify right side
    5,418.43x = 13,987,071.31
  5. Step 5: Solve for x
    x = 13,987,071.31/5,418.43
  6. Step 6: Final answer
    x = 2,581.39

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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.