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Finding the Fourth Proportional to 8,688.39, 11,996.87 and 8,025.00

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Solution

The fourth proportional to 8,688.39, 11,996.87 and 8,025.00 is: 11,080.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,688.39 : 11,996.87 = 8,025.00 : x
  2. Step 2: Convert to fraction form
    8,688.39/11,996.87 = 8,025.00/x
  3. Step 3: Cross multiply
    8,688.39x = 11,996.87 × 8,025.00
  4. Step 4: Simplify right side
    8,688.39x = 96,274,841.83
  5. Step 5: Solve for x
    x = 96,274,841.83/8,688.39
  6. Step 6: Final answer
    x = 11,080.87

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Half scale
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Double scale
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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.