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Finding the Fourth Proportional to 8,065.94, 12,099.99 and 7,921.22

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Solution

The fourth proportional to 8,065.94, 12,099.99 and 7,921.22 is: 11,882.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.94 : 12,099.99 = 7,921.22 : x
  2. Step 2: Convert to fraction form
    8,065.94/12,099.99 = 7,921.22/x
  3. Step 3: Cross multiply
    8,065.94x = 12,099.99 × 7,921.22
  4. Step 4: Simplify right side
    8,065.94x = 95,846,682.79
  5. Step 5: Solve for x
    x = 95,846,682.79/8,065.94
  6. Step 6: Final answer
    x = 11,882.89

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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.