Home / 5,085.45-7,631.42-2,163.75

Finding the Fourth Proportional to 5,085.45, 7,631.42 and 2,163.75

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Solution

The fourth proportional to 5,085.45, 7,631.42 and 2,163.75 is: 3,247.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.45 : 7,631.42 = 2,163.75 : x
  2. Step 2: Convert to fraction form
    5,085.45/7,631.42 = 2,163.75/x
  3. Step 3: Cross multiply
    5,085.45x = 7,631.42 × 2,163.75
  4. Step 4: Simplify right side
    5,085.45x = 16,512,474.21
  5. Step 5: Solve for x
    x = 16,512,474.21/5,085.45
  6. Step 6: Final answer
    x = 3,247.00

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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.