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Finding the Fourth Proportional to 8,411.92, 12,615.97 and 2,489.25

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Solution

The fourth proportional to 8,411.92, 12,615.97 and 2,489.25 is: 3,733.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,411.92 : 12,615.97 = 2,489.25 : x
  2. Step 2: Convert to fraction form
    8,411.92/12,615.97 = 2,489.25/x
  3. Step 3: Cross multiply
    8,411.92x = 12,615.97 × 2,489.25
  4. Step 4: Simplify right side
    8,411.92x = 31,404,309.97
  5. Step 5: Solve for x
    x = 31,404,309.97/8,411.92
  6. Step 6: Final answer
    x = 3,733.31

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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.