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Finding the Fourth Proportional to 7,384.55, 11,080.96 and 3,921.71

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Solution

The fourth proportional to 7,384.55, 11,080.96 and 3,921.71 is: 5,884.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,384.55 : 11,080.96 = 3,921.71 : x
  2. Step 2: Convert to fraction form
    7,384.55/11,080.96 = 3,921.71/x
  3. Step 3: Cross multiply
    7,384.55x = 11,080.96 × 3,921.71
  4. Step 4: Simplify right side
    7,384.55x = 43,456,246.43
  5. Step 5: Solve for x
    x = 43,456,246.43/7,384.55
  6. Step 6: Final answer
    x = 5,884.76

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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.