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Finding the Fourth Proportional to 7,961.96, 10,988.82 and 6,633.56

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Solution

The fourth proportional to 7,961.96, 10,988.82 and 6,633.56 is: 9,155.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.96 : 10,988.82 = 6,633.56 : x
  2. Step 2: Convert to fraction form
    7,961.96/10,988.82 = 6,633.56/x
  3. Step 3: Cross multiply
    7,961.96x = 10,988.82 × 6,633.56
  4. Step 4: Simplify right side
    7,961.96x = 72,894,996.80
  5. Step 5: Solve for x
    x = 72,894,996.80/7,961.96
  6. Step 6: Final answer
    x = 9,155.41

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1.5x scale

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.