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Finding the Fourth Proportional to 3,866.92, 5,338.40 and 3,025.84

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Solution

The fourth proportional to 3,866.92, 5,338.40 and 3,025.84 is: 4,177.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.92 : 5,338.40 = 3,025.84 : x
  2. Step 2: Convert to fraction form
    3,866.92/5,338.40 = 3,025.84/x
  3. Step 3: Cross multiply
    3,866.92x = 5,338.40 × 3,025.84
  4. Step 4: Simplify right side
    3,866.92x = 16,153,144.26
  5. Step 5: Solve for x
    x = 16,153,144.26/3,866.92
  6. Step 6: Final answer
    x = 4,177.26

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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.