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Finding the Fourth Proportional to 3,895.24, 5,375.60 and 2,216.80

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Solution

The fourth proportional to 3,895.24, 5,375.60 and 2,216.80 is: 3,059.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.24 : 5,375.60 = 2,216.80 : x
  2. Step 2: Convert to fraction form
    3,895.24/5,375.60 = 2,216.80/x
  3. Step 3: Cross multiply
    3,895.24x = 5,375.60 × 2,216.80
  4. Step 4: Simplify right side
    3,895.24x = 11,916,630.08
  5. Step 5: Solve for x
    x = 11,916,630.08/3,895.24
  6. Step 6: Final answer
    x = 3,059.28

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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.