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Finding the Fourth Proportional to 8,974.08, 12,343.02 and 7,201.80

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Solution

The fourth proportional to 8,974.08, 12,343.02 and 7,201.80 is: 9,905.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,974.08 : 12,343.02 = 7,201.80 : x
  2. Step 2: Convert to fraction form
    8,974.08/12,343.02 = 7,201.80/x
  3. Step 3: Cross multiply
    8,974.08x = 12,343.02 × 7,201.80
  4. Step 4: Simplify right side
    8,974.08x = 88,891,961.44
  5. Step 5: Solve for x
    x = 88,891,961.44/8,974.08
  6. Step 6: Final answer
    x = 9,905.41

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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.