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Finding the Fourth Proportional to 8,906.11, 12,290.50 and 4,927.29

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Solution

The fourth proportional to 8,906.11, 12,290.50 and 4,927.29 is: 6,799.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.11 : 12,290.50 = 4,927.29 : x
  2. Step 2: Convert to fraction form
    8,906.11/12,290.50 = 4,927.29/x
  3. Step 3: Cross multiply
    8,906.11x = 12,290.50 × 4,927.29
  4. Step 4: Simplify right side
    8,906.11x = 60,558,857.75
  5. Step 5: Solve for x
    x = 60,558,857.75/8,906.11
  6. Step 6: Final answer
    x = 6,799.70

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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.