Home / 3,972.96-5,485.41-2,481.60

Finding the Fourth Proportional to 3,972.96, 5,485.41 and 2,481.60

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Solution

The fourth proportional to 3,972.96, 5,485.41 and 2,481.60 is: 3,426.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.96 : 5,485.41 = 2,481.60 : x
  2. Step 2: Convert to fraction form
    3,972.96/5,485.41 = 2,481.60/x
  3. Step 3: Cross multiply
    3,972.96x = 5,485.41 × 2,481.60
  4. Step 4: Simplify right side
    3,972.96x = 13,612,593.46
  5. Step 5: Solve for x
    x = 13,612,593.46/3,972.96
  6. Step 6: Final answer
    x = 3,426.31

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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.