Home / 6,921.72-10,382.49-2,538.54

Finding the Fourth Proportional to 6,921.72, 10,382.49 and 2,538.54

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Solution

The fourth proportional to 6,921.72, 10,382.49 and 2,538.54 is: 3,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,921.72 : 10,382.49 = 2,538.54 : x
  2. Step 2: Convert to fraction form
    6,921.72/10,382.49 = 2,538.54/x
  3. Step 3: Cross multiply
    6,921.72x = 10,382.49 × 2,538.54
  4. Step 4: Simplify right side
    6,921.72x = 26,356,366.16
  5. Step 5: Solve for x
    x = 26,356,366.16/6,921.72
  6. Step 6: Final answer
    x = 3,807.78

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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.