Home / 9,220.97-12,729.92-5,636.75

Finding the Fourth Proportional to 9,220.97, 12,729.92 and 5,636.75

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Solution

The fourth proportional to 9,220.97, 12,729.92 and 5,636.75 is: 7,781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,220.97 : 12,729.92 = 5,636.75 : x
  2. Step 2: Convert to fraction form
    9,220.97/12,729.92 = 5,636.75/x
  3. Step 3: Cross multiply
    9,220.97x = 12,729.92 × 5,636.75
  4. Step 4: Simplify right side
    9,220.97x = 71,755,284.73
  5. Step 5: Solve for x
    x = 71,755,284.73/9,220.97
  6. Step 6: Final answer
    x = 7,781.75

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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.