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Finding the Fourth Proportional to 11,776.79, 17,666.90 and 3,982.97

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Solution

The fourth proportional to 11,776.79, 17,666.90 and 3,982.97 is: 5,975.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,776.79 : 17,666.90 = 3,982.97 : x
  2. Step 2: Convert to fraction form
    11,776.79/17,666.90 = 3,982.97/x
  3. Step 3: Cross multiply
    11,776.79x = 17,666.90 × 3,982.97
  4. Step 4: Simplify right side
    11,776.79x = 70,366,732.69
  5. Step 5: Solve for x
    x = 70,366,732.69/11,776.79
  6. Step 6: Final answer
    x = 5,975.04

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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.