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Finding the Fourth Proportional to 5,179.92, 7,768.26 and 2,255.28

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Solution

The fourth proportional to 5,179.92, 7,768.26 and 2,255.28 is: 3,382.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.92 : 7,768.26 = 2,255.28 : x
  2. Step 2: Convert to fraction form
    5,179.92/7,768.26 = 2,255.28/x
  3. Step 3: Cross multiply
    5,179.92x = 7,768.26 × 2,255.28
  4. Step 4: Simplify right side
    5,179.92x = 17,519,601.41
  5. Step 5: Solve for x
    x = 17,519,601.41/5,179.92
  6. Step 6: Final answer
    x = 3,382.21

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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.