Home / 7,921.22-11,881.82-2,077.82

Finding the Fourth Proportional to 7,921.22, 11,881.82 and 2,077.82

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Solution

The fourth proportional to 7,921.22, 11,881.82 and 2,077.82 is: 3,116.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.22 : 11,881.82 = 2,077.82 : x
  2. Step 2: Convert to fraction form
    7,921.22/11,881.82 = 2,077.82/x
  3. Step 3: Cross multiply
    7,921.22x = 11,881.82 × 2,077.82
  4. Step 4: Simplify right side
    7,921.22x = 24,688,213.43
  5. Step 5: Solve for x
    x = 24,688,213.43/7,921.22
  6. Step 6: Final answer
    x = 3,116.72

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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.