Home / 7,821.22-11,726.97-4,121.14

Finding the Fourth Proportional to 7,821.22, 11,726.97 and 4,121.14

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Solution

The fourth proportional to 7,821.22, 11,726.97 and 4,121.14 is: 6,179.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.22 : 11,726.97 = 4,121.14 : x
  2. Step 2: Convert to fraction form
    7,821.22/11,726.97 = 4,121.14/x
  3. Step 3: Cross multiply
    7,821.22x = 11,726.97 × 4,121.14
  4. Step 4: Simplify right side
    7,821.22x = 48,328,485.15
  5. Step 5: Solve for x
    x = 48,328,485.15/7,821.22
  6. Step 6: Final answer
    x = 6,179.15

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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.