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Finding the Fourth Proportional to 8,881.07, 12,308.78 and 8,714.99

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Solution

The fourth proportional to 8,881.07, 12,308.78 and 8,714.99 is: 12,078.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.07 : 12,308.78 = 8,714.99 : x
  2. Step 2: Convert to fraction form
    8,881.07/12,308.78 = 8,714.99/x
  3. Step 3: Cross multiply
    8,881.07x = 12,308.78 × 8,714.99
  4. Step 4: Simplify right side
    8,881.07x = 107,270,947.17
  5. Step 5: Solve for x
    x = 107,270,947.17/8,881.07
  6. Step 6: Final answer
    x = 12,078.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.