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Finding the Fourth Proportional to 8,687.97, 11,984.97 and 5,495.88

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Solution

The fourth proportional to 8,687.97, 11,984.97 and 5,495.88 is: 7,581.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.97 : 11,984.97 = 5,495.88 : x
  2. Step 2: Convert to fraction form
    8,687.97/11,984.97 = 5,495.88/x
  3. Step 3: Cross multiply
    8,687.97x = 11,984.97 × 5,495.88
  4. Step 4: Simplify right side
    8,687.97x = 65,867,956.92
  5. Step 5: Solve for x
    x = 65,867,956.92/8,687.97
  6. Step 6: Final answer
    x = 7,581.51

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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.