Home / 5,418.48-8,129.73-3,314.42

Finding the Fourth Proportional to 5,418.48, 8,129.73 and 3,314.42

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Solution

The fourth proportional to 5,418.48, 8,129.73 and 3,314.42 is: 4,972.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,418.48 : 8,129.73 = 3,314.42 : x
  2. Step 2: Convert to fraction form
    5,418.48/8,129.73 = 3,314.42/x
  3. Step 3: Cross multiply
    5,418.48x = 8,129.73 × 3,314.42
  4. Step 4: Simplify right side
    5,418.48x = 26,945,339.71
  5. Step 5: Solve for x
    x = 26,945,339.71/5,418.48
  6. Step 6: Final answer
    x = 4,972.86

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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.