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Finding the Fourth Proportional to 7,921.03, 11,881.92 and 2,077.64

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Solution

The fourth proportional to 7,921.03, 11,881.92 and 2,077.64 is: 3,116.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.03 : 11,881.92 = 2,077.64 : x
  2. Step 2: Convert to fraction form
    7,921.03/11,881.92 = 2,077.64/x
  3. Step 3: Cross multiply
    7,921.03x = 11,881.92 × 2,077.64
  4. Step 4: Simplify right side
    7,921.03x = 24,686,352.27
  5. Step 5: Solve for x
    x = 24,686,352.27/7,921.03
  6. Step 6: Final answer
    x = 3,116.56

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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.