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Finding the Fourth Proportional to 3,679.74, 5,085.15 and 2,793.99

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Solution

The fourth proportional to 3,679.74, 5,085.15 and 2,793.99 is: 3,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.74 : 5,085.15 = 2,793.99 : x
  2. Step 2: Convert to fraction form
    3,679.74/5,085.15 = 2,793.99/x
  3. Step 3: Cross multiply
    3,679.74x = 5,085.15 × 2,793.99
  4. Step 4: Simplify right side
    3,679.74x = 14,207,858.25
  5. Step 5: Solve for x
    x = 14,207,858.25/3,679.74
  6. Step 6: Final answer
    x = 3,861.10

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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.