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Finding the Fourth Proportional to 7,108.50, 9,809.82 and 3,964.98

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Solution

The fourth proportional to 7,108.50, 9,809.82 and 3,964.98 is: 5,471.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.50 : 9,809.82 = 3,964.98 : x
  2. Step 2: Convert to fraction form
    7,108.50/9,809.82 = 3,964.98/x
  3. Step 3: Cross multiply
    7,108.50x = 9,809.82 × 3,964.98
  4. Step 4: Simplify right side
    7,108.50x = 38,895,740.10
  5. Step 5: Solve for x
    x = 38,895,740.10/7,108.50
  6. Step 6: Final answer
    x = 5,471.72

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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.