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Finding the Fourth Proportional to 8,772.22, 13,127.04 and 7,028.42

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Solution

The fourth proportional to 8,772.22, 13,127.04 and 7,028.42 is: 10,517.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.22 : 13,127.04 = 7,028.42 : x
  2. Step 2: Convert to fraction form
    8,772.22/13,127.04 = 7,028.42/x
  3. Step 3: Cross multiply
    8,772.22x = 13,127.04 × 7,028.42
  4. Step 4: Simplify right side
    8,772.22x = 92,262,350.48
  5. Step 5: Solve for x
    x = 92,262,350.48/8,772.22
  6. Step 6: Final answer
    x = 10,517.56

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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.