Home / 2,132.78-2,943.42-1,201.28

Finding the Fourth Proportional to 2,132.78, 2,943.42 and 1,201.28

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Solution

The fourth proportional to 2,132.78, 2,943.42 and 1,201.28 is: 1,657.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.78 : 2,943.42 = 1,201.28 : x
  2. Step 2: Convert to fraction form
    2,132.78/2,943.42 = 1,201.28/x
  3. Step 3: Cross multiply
    2,132.78x = 2,943.42 × 1,201.28
  4. Step 4: Simplify right side
    2,132.78x = 3,535,871.58
  5. Step 5: Solve for x
    x = 3,535,871.58/2,132.78
  6. Step 6: Final answer
    x = 1,657.87

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.