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Finding the Fourth Proportional to 8,172.79, 12,234.40 and 7,393.12

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Solution

The fourth proportional to 8,172.79, 12,234.40 and 7,393.12 is: 11,067.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,172.79 : 12,234.40 = 7,393.12 : x
  2. Step 2: Convert to fraction form
    8,172.79/12,234.40 = 7,393.12/x
  3. Step 3: Cross multiply
    8,172.79x = 12,234.40 × 7,393.12
  4. Step 4: Simplify right side
    8,172.79x = 90,450,338.26
  5. Step 5: Solve for x
    x = 90,450,338.26/8,172.79
  6. Step 6: Final answer
    x = 11,067.26

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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.