Home / 2,126.54-3,185.19-1,028.60

Finding the Fourth Proportional to 2,126.54, 3,185.19 and 1,028.60

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Solution

The fourth proportional to 2,126.54, 3,185.19 and 1,028.60 is: 1,540.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.54 : 3,185.19 = 1,028.60 : x
  2. Step 2: Convert to fraction form
    2,126.54/3,185.19 = 1,028.60/x
  3. Step 3: Cross multiply
    2,126.54x = 3,185.19 × 1,028.60
  4. Step 4: Simplify right side
    2,126.54x = 3,276,278.47
  5. Step 5: Solve for x
    x = 3,276,278.47/2,126.54
  6. Step 6: Final answer
    x = 1,540.66

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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.