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Finding the Fourth Proportional to 3,879.92, 5,352.04 and 2,816.46

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Solution

The fourth proportional to 3,879.92, 5,352.04 and 2,816.46 is: 3,885.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.92 : 5,352.04 = 2,816.46 : x
  2. Step 2: Convert to fraction form
    3,879.92/5,352.04 = 2,816.46/x
  3. Step 3: Cross multiply
    3,879.92x = 5,352.04 × 2,816.46
  4. Step 4: Simplify right side
    3,879.92x = 15,073,806.58
  5. Step 5: Solve for x
    x = 15,073,806.58/3,879.92
  6. Step 6: Final answer
    x = 3,885.08

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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.