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Finding the Fourth Proportional to 8,687.96, 13,032.39 and 6,611.22

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Solution

The fourth proportional to 8,687.96, 13,032.39 and 6,611.22 is: 9,917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.96 : 13,032.39 = 6,611.22 : x
  2. Step 2: Convert to fraction form
    8,687.96/13,032.39 = 6,611.22/x
  3. Step 3: Cross multiply
    8,687.96x = 13,032.39 × 6,611.22
  4. Step 4: Simplify right side
    8,687.96x = 86,160,022.21
  5. Step 5: Solve for x
    x = 86,160,022.21/8,687.96
  6. Step 6: Final answer
    x = 9,917.18

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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.