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Finding the Fourth Proportional to 3,456.87, 4,770.12 and 1,964.98

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Solution

The fourth proportional to 3,456.87, 4,770.12 and 1,964.98 is: 2,711.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,456.87 : 4,770.12 = 1,964.98 : x
  2. Step 2: Convert to fraction form
    3,456.87/4,770.12 = 1,964.98/x
  3. Step 3: Cross multiply
    3,456.87x = 4,770.12 × 1,964.98
  4. Step 4: Simplify right side
    3,456.87x = 9,373,190.40
  5. Step 5: Solve for x
    x = 9,373,190.40/3,456.87
  6. Step 6: Final answer
    x = 2,711.47

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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.