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Finding the Fourth Proportional to 7,170.81, 10,755.82 and 2,239.88

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Solution

The fourth proportional to 7,170.81, 10,755.82 and 2,239.88 is: 3,359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.81 : 10,755.82 = 2,239.88 : x
  2. Step 2: Convert to fraction form
    7,170.81/10,755.82 = 2,239.88/x
  3. Step 3: Cross multiply
    7,170.81x = 10,755.82 × 2,239.88
  4. Step 4: Simplify right side
    7,170.81x = 24,091,746.10
  5. Step 5: Solve for x
    x = 24,091,746.10/7,170.81
  6. Step 6: Final answer
    x = 3,359.70

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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.