Home / 5,085.78-7,629.45-2,163.30

Finding the Fourth Proportional to 5,085.78, 7,629.45 and 2,163.30

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Solution

The fourth proportional to 5,085.78, 7,629.45 and 2,163.30 is: 3,245.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,085.78 : 7,629.45 = 2,163.30 : x
  2. Step 2: Convert to fraction form
    5,085.78/7,629.45 = 2,163.30/x
  3. Step 3: Cross multiply
    5,085.78x = 7,629.45 × 2,163.30
  4. Step 4: Simplify right side
    5,085.78x = 16,504,789.19
  5. Step 5: Solve for x
    x = 16,504,789.19/5,085.78
  6. Step 6: Final answer
    x = 3,245.28

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1.5x scale

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.