Home / 6,811.31-10,213.26-2,129.30

Finding the Fourth Proportional to 6,811.31, 10,213.26 and 2,129.30

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Solution

The fourth proportional to 6,811.31, 10,213.26 and 2,129.30 is: 3,192.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.31 : 10,213.26 = 2,129.30 : x
  2. Step 2: Convert to fraction form
    6,811.31/10,213.26 = 2,129.30/x
  3. Step 3: Cross multiply
    6,811.31x = 10,213.26 × 2,129.30
  4. Step 4: Simplify right side
    6,811.31x = 21,747,094.52
  5. Step 5: Solve for x
    x = 21,747,094.52/6,811.31
  6. Step 6: Final answer
    x = 3,192.79

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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.