Home / 5,121.78-7,684.56-2,003.28

Finding the Fourth Proportional to 5,121.78, 7,684.56 and 2,003.28

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Solution

The fourth proportional to 5,121.78, 7,684.56 and 2,003.28 is: 3,005.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,121.78 : 7,684.56 = 2,003.28 : x
  2. Step 2: Convert to fraction form
    5,121.78/7,684.56 = 2,003.28/x
  3. Step 3: Cross multiply
    5,121.78x = 7,684.56 × 2,003.28
  4. Step 4: Simplify right side
    5,121.78x = 15,394,325.36
  5. Step 5: Solve for x
    x = 15,394,325.36/5,121.78
  6. Step 6: Final answer
    x = 3,005.66

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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.