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Finding the Fourth Proportional to 8,971.26, 12,381.26 and 5,194.33

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Solution

The fourth proportional to 8,971.26, 12,381.26 and 5,194.33 is: 7,168.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,971.26 : 12,381.26 = 5,194.33 : x
  2. Step 2: Convert to fraction form
    8,971.26/12,381.26 = 5,194.33/x
  3. Step 3: Cross multiply
    8,971.26x = 12,381.26 × 5,194.33
  4. Step 4: Simplify right side
    8,971.26x = 64,312,293.33
  5. Step 5: Solve for x
    x = 64,312,293.33/8,971.26
  6. Step 6: Final answer
    x = 7,168.71

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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.