Home / 5,421.24-8,129.82-2,132.54

Finding the Fourth Proportional to 5,421.24, 8,129.82 and 2,132.54

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Solution

The fourth proportional to 5,421.24, 8,129.82 and 2,132.54 is: 3,198.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.24 : 8,129.82 = 2,132.54 : x
  2. Step 2: Convert to fraction form
    5,421.24/8,129.82 = 2,132.54/x
  3. Step 3: Cross multiply
    5,421.24x = 8,129.82 × 2,132.54
  4. Step 4: Simplify right side
    5,421.24x = 17,337,125.69
  5. Step 5: Solve for x
    x = 17,337,125.69/5,421.24
  6. Step 6: Final answer
    x = 3,198.00

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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.