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Finding the Fourth Proportional to 7,563.57, 11,321.92 and 6,917.71

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Solution

The fourth proportional to 7,563.57, 11,321.92 and 6,917.71 is: 10,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,563.57 : 11,321.92 = 6,917.71 : x
  2. Step 2: Convert to fraction form
    7,563.57/11,321.92 = 6,917.71/x
  3. Step 3: Cross multiply
    7,563.57x = 11,321.92 × 6,917.71
  4. Step 4: Simplify right side
    7,563.57x = 78,321,759.20
  5. Step 5: Solve for x
    x = 78,321,759.20/7,563.57
  6. Step 6: Final answer
    x = 10,355.13

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1.5x scale

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.