Home / 5,129.42-7,081.17-3,992.59

Finding the Fourth Proportional to 5,129.42, 7,081.17 and 3,992.59

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Solution

The fourth proportional to 5,129.42, 7,081.17 and 3,992.59 is: 5,511.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.42 : 7,081.17 = 3,992.59 : x
  2. Step 2: Convert to fraction form
    5,129.42/7,081.17 = 3,992.59/x
  3. Step 3: Cross multiply
    5,129.42x = 7,081.17 × 3,992.59
  4. Step 4: Simplify right side
    5,129.42x = 28,272,173.12
  5. Step 5: Solve for x
    x = 28,272,173.12/5,129.42
  6. Step 6: Final answer
    x = 5,511.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.