Home / 4,789.64-7,185.27-2,192.78

Finding the Fourth Proportional to 4,789.64, 7,185.27 and 2,192.78

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Solution

The fourth proportional to 4,789.64, 7,185.27 and 2,192.78 is: 3,289.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,789.64 : 7,185.27 = 2,192.78 : x
  2. Step 2: Convert to fraction form
    4,789.64/7,185.27 = 2,192.78/x
  3. Step 3: Cross multiply
    4,789.64x = 7,185.27 × 2,192.78
  4. Step 4: Simplify right side
    4,789.64x = 15,755,716.35
  5. Step 5: Solve for x
    x = 15,755,716.35/4,789.64
  6. Step 6: Final answer
    x = 3,289.54

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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.