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Finding the Fourth Proportional to 8,685.27, 13,009.73 and 7,200.97

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Solution

The fourth proportional to 8,685.27, 13,009.73 and 7,200.97 is: 10,786.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.27 : 13,009.73 = 7,200.97 : x
  2. Step 2: Convert to fraction form
    8,685.27/13,009.73 = 7,200.97/x
  3. Step 3: Cross multiply
    8,685.27x = 13,009.73 × 7,200.97
  4. Step 4: Simplify right side
    8,685.27x = 93,682,606.91
  5. Step 5: Solve for x
    x = 93,682,606.91/8,685.27
  6. Step 6: Final answer
    x = 10,786.38

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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.