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Finding the Fourth Proportional to 8,853.40, 12,179.90 and 8,607.34

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Solution

The fourth proportional to 8,853.40, 12,179.90 and 8,607.34 is: 11,841.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.40 : 12,179.90 = 8,607.34 : x
  2. Step 2: Convert to fraction form
    8,853.40/12,179.90 = 8,607.34/x
  3. Step 3: Cross multiply
    8,853.40x = 12,179.90 × 8,607.34
  4. Step 4: Simplify right side
    8,853.40x = 104,836,540.47
  5. Step 5: Solve for x
    x = 104,836,540.47/8,853.40
  6. Step 6: Final answer
    x = 11,841.39

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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.