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Finding the Fourth Proportional to 3,971.52, 5,481.02 and 2,203.70

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Solution

The fourth proportional to 3,971.52, 5,481.02 and 2,203.70 is: 3,041.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.52 : 5,481.02 = 2,203.70 : x
  2. Step 2: Convert to fraction form
    3,971.52/5,481.02 = 2,203.70/x
  3. Step 3: Cross multiply
    3,971.52x = 5,481.02 × 2,203.70
  4. Step 4: Simplify right side
    3,971.52x = 12,078,485.35
  5. Step 5: Solve for x
    x = 12,078,485.35/3,971.52
  6. Step 6: Final answer
    x = 3,041.28

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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.