Home / 5,420.52-8,132.54-2,131.79

Finding the Fourth Proportional to 5,420.52, 8,132.54 and 2,131.79

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Solution

The fourth proportional to 5,420.52, 8,132.54 and 2,131.79 is: 3,198.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.52 : 8,132.54 = 2,131.79 : x
  2. Step 2: Convert to fraction form
    5,420.52/8,132.54 = 2,131.79/x
  3. Step 3: Cross multiply
    5,420.52x = 8,132.54 × 2,131.79
  4. Step 4: Simplify right side
    5,420.52x = 17,336,816.12
  5. Step 5: Solve for x
    x = 17,336,816.12/5,420.52
  6. Step 6: Final answer
    x = 3,198.37

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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.