Home / 6,921.31-9,551.28-3,896.43

Finding the Fourth Proportional to 6,921.31, 9,551.28 and 3,896.43

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Solution

The fourth proportional to 6,921.31, 9,551.28 and 3,896.43 is: 5,377.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.31 : 9,551.28 = 3,896.43 : x
  2. Step 2: Convert to fraction form
    6,921.31/9,551.28 = 3,896.43/x
  3. Step 3: Cross multiply
    6,921.31x = 9,551.28 × 3,896.43
  4. Step 4: Simplify right side
    6,921.31x = 37,215,893.93
  5. Step 5: Solve for x
    x = 37,215,893.93/6,921.31
  6. Step 6: Final answer
    x = 5,377.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.