Home / 3,885.12-5,359.26-2,391.98

Finding the Fourth Proportional to 3,885.12, 5,359.26 and 2,391.98

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Solution

The fourth proportional to 3,885.12, 5,359.26 and 2,391.98 is: 3,299.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.12 : 5,359.26 = 2,391.98 : x
  2. Step 2: Convert to fraction form
    3,885.12/5,359.26 = 2,391.98/x
  3. Step 3: Cross multiply
    3,885.12x = 5,359.26 × 2,391.98
  4. Step 4: Simplify right side
    3,885.12x = 12,819,234.87
  5. Step 5: Solve for x
    x = 12,819,234.87/3,885.12
  6. Step 6: Final answer
    x = 3,299.57

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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.