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Finding the Fourth Proportional to 7,080.88, 10,621.31 and 3,371.86

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Solution

The fourth proportional to 7,080.88, 10,621.31 and 3,371.86 is: 5,057.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,080.88 : 10,621.31 = 3,371.86 : x
  2. Step 2: Convert to fraction form
    7,080.88/10,621.31 = 3,371.86/x
  3. Step 3: Cross multiply
    7,080.88x = 10,621.31 × 3,371.86
  4. Step 4: Simplify right side
    7,080.88x = 35,813,572.13
  5. Step 5: Solve for x
    x = 35,813,572.13/7,080.88
  6. Step 6: Final answer
    x = 5,057.79

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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.