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Finding the Fourth Proportional to 3,879.76, 5,351.61 and 2,552.98

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Solution

The fourth proportional to 3,879.76, 5,351.61 and 2,552.98 is: 3,521.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.76 : 5,351.61 = 2,552.98 : x
  2. Step 2: Convert to fraction form
    3,879.76/5,351.61 = 2,552.98/x
  3. Step 3: Cross multiply
    3,879.76x = 5,351.61 × 2,552.98
  4. Step 4: Simplify right side
    3,879.76x = 13,662,553.30
  5. Step 5: Solve for x
    x = 13,662,553.30/3,879.76
  6. Step 6: Final answer
    x = 3,521.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.