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Finding the Fourth Proportional to 8,879.28, 12,247.08 and 6,227.28

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Solution

The fourth proportional to 8,879.28, 12,247.08 and 6,227.28 is: 8,589.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.28 : 12,247.08 = 6,227.28 : x
  2. Step 2: Convert to fraction form
    8,879.28/12,247.08 = 6,227.28/x
  3. Step 3: Cross multiply
    8,879.28x = 12,247.08 × 6,227.28
  4. Step 4: Simplify right side
    8,879.28x = 76,265,996.34
  5. Step 5: Solve for x
    x = 76,265,996.34/8,879.28
  6. Step 6: Final answer
    x = 8,589.21

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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.