Home / 5,418.53-8,127.72-2,129.33

Finding the Fourth Proportional to 5,418.53, 8,127.72 and 2,129.33

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Solution

The fourth proportional to 5,418.53, 8,127.72 and 2,129.33 is: 3,193.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.53 : 8,127.72 = 2,129.33 : x
  2. Step 2: Convert to fraction form
    5,418.53/8,127.72 = 2,129.33/x
  3. Step 3: Cross multiply
    5,418.53x = 8,127.72 × 2,129.33
  4. Step 4: Simplify right side
    5,418.53x = 17,306,598.03
  5. Step 5: Solve for x
    x = 17,306,598.03/5,418.53
  6. Step 6: Final answer
    x = 3,193.97

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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.