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Finding the Fourth Proportional to 8,505.96, 11,722.98 and 6,917.88

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Solution

The fourth proportional to 8,505.96, 11,722.98 and 6,917.88 is: 9,534.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505.96 : 11,722.98 = 6,917.88 : x
  2. Step 2: Convert to fraction form
    8,505.96/11,722.98 = 6,917.88/x
  3. Step 3: Cross multiply
    8,505.96x = 11,722.98 × 6,917.88
  4. Step 4: Simplify right side
    8,505.96x = 81,098,122.28
  5. Step 5: Solve for x
    x = 81,098,122.28/8,505.96
  6. Step 6: Final answer
    x = 9,534.27

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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.