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Finding the Fourth Proportional to 7,091.52, 9,786.60 and 5,910.60

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Solution

The fourth proportional to 7,091.52, 9,786.60 and 5,910.60 is: 8,156.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,091.52 : 9,786.60 = 5,910.60 : x
  2. Step 2: Convert to fraction form
    7,091.52/9,786.60 = 5,910.60/x
  3. Step 3: Cross multiply
    7,091.52x = 9,786.60 × 5,910.60
  4. Step 4: Simplify right side
    7,091.52x = 57,844,677.96
  5. Step 5: Solve for x
    x = 57,844,677.96/7,091.52
  6. Step 6: Final answer
    x = 8,156.88

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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.