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Finding the Fourth Proportional to 8,722.48, 11,875.96 and 8,694.80

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Solution

The fourth proportional to 8,722.48, 11,875.96 and 8,694.80 is: 11,838.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.48 : 11,875.96 = 8,694.80 : x
  2. Step 2: Convert to fraction form
    8,722.48/11,875.96 = 8,694.80/x
  3. Step 3: Cross multiply
    8,722.48x = 11,875.96 × 8,694.80
  4. Step 4: Simplify right side
    8,722.48x = 103,259,097.01
  5. Step 5: Solve for x
    x = 103,259,097.01/8,722.48
  6. Step 6: Final answer
    x = 11,838.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.