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Finding the Fourth Proportional to 3,271.28, 4,905.43 and 1,955.62

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Solution

The fourth proportional to 3,271.28, 4,905.43 and 1,955.62 is: 2,932.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,271.28 : 4,905.43 = 1,955.62 : x
  2. Step 2: Convert to fraction form
    3,271.28/4,905.43 = 1,955.62/x
  3. Step 3: Cross multiply
    3,271.28x = 4,905.43 × 1,955.62
  4. Step 4: Simplify right side
    3,271.28x = 9,593,157.02
  5. Step 5: Solve for x
    x = 9,593,157.02/3,271.28
  6. Step 6: Final answer
    x = 2,932.54

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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.