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Finding the Fourth Proportional to 3,265.70, 4,891.35 and 1,964.90

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Solution

The fourth proportional to 3,265.70, 4,891.35 and 1,964.90 is: 2,943.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,265.70 : 4,891.35 = 1,964.90 : x
  2. Step 2: Convert to fraction form
    3,265.70/4,891.35 = 1,964.90/x
  3. Step 3: Cross multiply
    3,265.70x = 4,891.35 × 1,964.90
  4. Step 4: Simplify right side
    3,265.70x = 9,611,013.62
  5. Step 5: Solve for x
    x = 9,611,013.62/3,265.70
  6. Step 6: Final answer
    x = 2,943.02

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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.