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Finding the Fourth Proportional to 8,881.46, 12,257.91 and 8,487.80

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Solution

The fourth proportional to 8,881.46, 12,257.91 and 8,487.80 is: 11,714.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.46 : 12,257.91 = 8,487.80 : x
  2. Step 2: Convert to fraction form
    8,881.46/12,257.91 = 8,487.80/x
  3. Step 3: Cross multiply
    8,881.46x = 12,257.91 × 8,487.80
  4. Step 4: Simplify right side
    8,881.46x = 104,042,688.50
  5. Step 5: Solve for x
    x = 104,042,688.50/8,881.46
  6. Step 6: Final answer
    x = 11,714.59

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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.