Home / 5,129.15-7,691.00-2,166.66

Finding the Fourth Proportional to 5,129.15, 7,691.00 and 2,166.66

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Solution

The fourth proportional to 5,129.15, 7,691.00 and 2,166.66 is: 3,248.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.15 : 7,691.00 = 2,166.66 : x
  2. Step 2: Convert to fraction form
    5,129.15/7,691.00 = 2,166.66/x
  3. Step 3: Cross multiply
    5,129.15x = 7,691.00 × 2,166.66
  4. Step 4: Simplify right side
    5,129.15x = 16,663,771.23
  5. Step 5: Solve for x
    x = 16,663,771.23/5,129.15
  6. Step 6: Final answer
    x = 3,248.84

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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.