Home / 1,983.54-2,736.27-1,284.78

Finding the Fourth Proportional to 1,983.54, 2,736.27 and 1,284.78

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Solution

The fourth proportional to 1,983.54, 2,736.27 and 1,284.78 is: 1,772.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.54 : 2,736.27 = 1,284.78 : x
  2. Step 2: Convert to fraction form
    1,983.54/2,736.27 = 1,284.78/x
  3. Step 3: Cross multiply
    1,983.54x = 2,736.27 × 1,284.78
  4. Step 4: Simplify right side
    1,983.54x = 3,515,504.97
  5. Step 5: Solve for x
    x = 3,515,504.97/1,983.54
  6. Step 6: Final answer
    x = 1,772.34

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1.5x scale

Why These Related Problems?

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