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Finding the Fourth Proportional to 8,606.28, 11,856.20 and 8,089.50

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Solution

The fourth proportional to 8,606.28, 11,856.20 and 8,089.50 is: 11,144.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.28 : 11,856.20 = 8,089.50 : x
  2. Step 2: Convert to fraction form
    8,606.28/11,856.20 = 8,089.50/x
  3. Step 3: Cross multiply
    8,606.28x = 11,856.20 × 8,089.50
  4. Step 4: Simplify right side
    8,606.28x = 95,910,729.90
  5. Step 5: Solve for x
    x = 95,910,729.90/8,606.28
  6. Step 6: Final answer
    x = 11,144.27

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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.