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Finding the Fourth Proportional to 8,878.91, 13,308.89 and 6,680.84

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Solution

The fourth proportional to 8,878.91, 13,308.89 and 6,680.84 is: 10,014.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.91 : 13,308.89 = 6,680.84 : x
  2. Step 2: Convert to fraction form
    8,878.91/13,308.89 = 6,680.84/x
  3. Step 3: Cross multiply
    8,878.91x = 13,308.89 × 6,680.84
  4. Step 4: Simplify right side
    8,878.91x = 88,914,464.72
  5. Step 5: Solve for x
    x = 88,914,464.72/8,878.91
  6. Step 6: Final answer
    x = 10,014.13

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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.