Home / 3,660.12-5,485.12-3,171.96

Finding the Fourth Proportional to 3,660.12, 5,485.12 and 3,171.96

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Solution

The fourth proportional to 3,660.12, 5,485.12 and 3,171.96 is: 4,753.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660.12 : 5,485.12 = 3,171.96 : x
  2. Step 2: Convert to fraction form
    3,660.12/5,485.12 = 3,171.96/x
  3. Step 3: Cross multiply
    3,660.12x = 5,485.12 × 3,171.96
  4. Step 4: Simplify right side
    3,660.12x = 17,398,581.24
  5. Step 5: Solve for x
    x = 17,398,581.24/3,660.12
  6. Step 6: Final answer
    x = 4,753.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.