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Finding the Fourth Proportional to 8,507.91, 12,769.92 and 5,227.41

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Solution

The fourth proportional to 8,507.91, 12,769.92 and 5,227.41 is: 7,846.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.91 : 12,769.92 = 5,227.41 : x
  2. Step 2: Convert to fraction form
    8,507.91/12,769.92 = 5,227.41/x
  3. Step 3: Cross multiply
    8,507.91x = 12,769.92 × 5,227.41
  4. Step 4: Simplify right side
    8,507.91x = 66,753,607.51
  5. Step 5: Solve for x
    x = 66,753,607.51/8,507.91
  6. Step 6: Final answer
    x = 7,846.06

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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.