Home / 6,721.78-10,083.18-2,104.78

Finding the Fourth Proportional to 6,721.78, 10,083.18 and 2,104.78

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Solution

The fourth proportional to 6,721.78, 10,083.18 and 2,104.78 is: 3,157.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.78 : 10,083.18 = 2,104.78 : x
  2. Step 2: Convert to fraction form
    6,721.78/10,083.18 = 2,104.78/x
  3. Step 3: Cross multiply
    6,721.78x = 10,083.18 × 2,104.78
  4. Step 4: Simplify right side
    6,721.78x = 21,222,875.60
  5. Step 5: Solve for x
    x = 21,222,875.60/6,721.78
  6. Step 6: Final answer
    x = 3,157.33

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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.