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Finding the Fourth Proportional to 8,339.28, 11,512.98 and 6,655.29

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Solution

The fourth proportional to 8,339.28, 11,512.98 and 6,655.29 is: 9,188.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.28 : 11,512.98 = 6,655.29 : x
  2. Step 2: Convert to fraction form
    8,339.28/11,512.98 = 6,655.29/x
  3. Step 3: Cross multiply
    8,339.28x = 11,512.98 × 6,655.29
  4. Step 4: Simplify right side
    8,339.28x = 76,622,220.66
  5. Step 5: Solve for x
    x = 76,622,220.66/8,339.28
  6. Step 6: Final answer
    x = 9,188.11

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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.