Home / 3,808.58-5,255.82-2,129.99

Finding the Fourth Proportional to 3,808.58, 5,255.82 and 2,129.99

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Solution

The fourth proportional to 3,808.58, 5,255.82 and 2,129.99 is: 2,939.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.58 : 5,255.82 = 2,129.99 : x
  2. Step 2: Convert to fraction form
    3,808.58/5,255.82 = 2,129.99/x
  3. Step 3: Cross multiply
    3,808.58x = 5,255.82 × 2,129.99
  4. Step 4: Simplify right side
    3,808.58x = 11,194,817.76
  5. Step 5: Solve for x
    x = 11,194,817.76/3,808.58
  6. Step 6: Final answer
    x = 2,939.37

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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.