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Finding the Fourth Proportional to 8,638.08, 11,891.73 and 8,241.33

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Solution

The fourth proportional to 8,638.08, 11,891.73 and 8,241.33 is: 11,345.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638.08 : 11,891.73 = 8,241.33 : x
  2. Step 2: Convert to fraction form
    8,638.08/11,891.73 = 8,241.33/x
  3. Step 3: Cross multiply
    8,638.08x = 11,891.73 × 8,241.33
  4. Step 4: Simplify right side
    8,638.08x = 98,003,671.20
  5. Step 5: Solve for x
    x = 98,003,671.20/8,638.08
  6. Step 6: Final answer
    x = 11,345.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.