Home / 1,322.73-1,991.39-1,144.13

Finding the Fourth Proportional to 1,322.73, 1,991.39 and 1,144.13

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Solution

The fourth proportional to 1,322.73, 1,991.39 and 1,144.13 is: 1,722.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,322.73 : 1,991.39 = 1,144.13 : x
  2. Step 2: Convert to fraction form
    1,322.73/1,991.39 = 1,144.13/x
  3. Step 3: Cross multiply
    1,322.73x = 1,991.39 × 1,144.13
  4. Step 4: Simplify right side
    1,322.73x = 2,278,393.36
  5. Step 5: Solve for x
    x = 2,278,393.36/1,322.73
  6. Step 6: Final answer
    x = 1,722.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.