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Finding the Fourth Proportional to 8,632.67, 11,958.20 and 8,457.71

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Solution

The fourth proportional to 8,632.67, 11,958.20 and 8,457.71 is: 11,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,632.67 : 11,958.20 = 8,457.71 : x
  2. Step 2: Convert to fraction form
    8,632.67/11,958.20 = 8,457.71/x
  3. Step 3: Cross multiply
    8,632.67x = 11,958.20 × 8,457.71
  4. Step 4: Simplify right side
    8,632.67x = 101,138,917.36
  5. Step 5: Solve for x
    x = 101,138,917.36/8,632.67
  6. Step 6: Final answer
    x = 11,715.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.