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Finding the Fourth Proportional to 3,879.54, 5,775.44 and 3,856.48

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Solution

The fourth proportional to 3,879.54, 5,775.44 and 3,856.48 is: 5,741.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.54 : 5,775.44 = 3,856.48 : x
  2. Step 2: Convert to fraction form
    3,879.54/5,775.44 = 3,856.48/x
  3. Step 3: Cross multiply
    3,879.54x = 5,775.44 × 3,856.48
  4. Step 4: Simplify right side
    3,879.54x = 22,272,849.57
  5. Step 5: Solve for x
    x = 22,272,849.57/3,879.54
  6. Step 6: Final answer
    x = 5,741.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.