Home / 5,245.26-7,868.30-2,123.79

Finding the Fourth Proportional to 5,245.26, 7,868.30 and 2,123.79

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Solution

The fourth proportional to 5,245.26, 7,868.30 and 2,123.79 is: 3,185.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.26 : 7,868.30 = 2,123.79 : x
  2. Step 2: Convert to fraction form
    5,245.26/7,868.30 = 2,123.79/x
  3. Step 3: Cross multiply
    5,245.26x = 7,868.30 × 2,123.79
  4. Step 4: Simplify right side
    5,245.26x = 16,710,616.86
  5. Step 5: Solve for x
    x = 16,710,616.86/5,245.26
  6. Step 6: Final answer
    x = 3,185.85

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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.