Home / 6,481.36-9,721.28-1,864

Finding the Fourth Proportional to 6,481.36, 9,721.28 and 1,864

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Solution

The fourth proportional to 6,481.36, 9,721.28 and 1,864 is: 2,795.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,481.36 : 9,721.28 = 1,864 : x
  2. Step 2: Convert to fraction form
    6,481.36/9,721.28 = 1,864/x
  3. Step 3: Cross multiply
    6,481.36x = 9,721.28 × 1,864
  4. Step 4: Simplify right side
    6,481.36x = 18,120,465.92
  5. Step 5: Solve for x
    x = 18,120,465.92/6,481.36
  6. Step 6: Final answer
    x = 2,795.78

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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.