Home / 5,216.88-7,199.30-3,121

Finding the Fourth Proportional to 5,216.88, 7,199.30 and 3,121

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Solution

The fourth proportional to 5,216.88, 7,199.30 and 3,121 is: 4,306.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,216.88 : 7,199.30 = 3,121 : x
  2. Step 2: Convert to fraction form
    5,216.88/7,199.30 = 3,121/x
  3. Step 3: Cross multiply
    5,216.88x = 7,199.30 × 3,121
  4. Step 4: Simplify right side
    5,216.88x = 22,469,015.30
  5. Step 5: Solve for x
    x = 22,469,015.30/5,216.88
  6. Step 6: Final answer
    x = 4,306.98

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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.