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Finding the Fourth Proportional to 3,171.54, 4,754.50 and 1,222.40

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Solution

The fourth proportional to 3,171.54, 4,754.50 and 1,222.40 is: 1,832.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.54 : 4,754.50 = 1,222.40 : x
  2. Step 2: Convert to fraction form
    3,171.54/4,754.50 = 1,222.40/x
  3. Step 3: Cross multiply
    3,171.54x = 4,754.50 × 1,222.40
  4. Step 4: Simplify right side
    3,171.54x = 5,811,900.80
  5. Step 5: Solve for x
    x = 5,811,900.80/3,171.54
  6. Step 6: Final answer
    x = 1,832.52

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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.