Home / 3,172.78-4,759.49-1,092.51

Finding the Fourth Proportional to 3,172.78, 4,759.49 and 1,092.51

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Solution

The fourth proportional to 3,172.78, 4,759.49 and 1,092.51 is: 1,638.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.78 : 4,759.49 = 1,092.51 : x
  2. Step 2: Convert to fraction form
    3,172.78/4,759.49 = 1,092.51/x
  3. Step 3: Cross multiply
    3,172.78x = 4,759.49 × 1,092.51
  4. Step 4: Simplify right side
    3,172.78x = 5,199,767.11
  5. Step 5: Solve for x
    x = 5,199,767.11/3,172.78
  6. Step 6: Final answer
    x = 1,638.87

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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.