Home / 1,229.27-1,836.71-1,186.21

Finding the Fourth Proportional to 1,229.27, 1,836.71 and 1,186.21

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Solution

The fourth proportional to 1,229.27, 1,836.71 and 1,186.21 is: 1,772.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229.27 : 1,836.71 = 1,186.21 : x
  2. Step 2: Convert to fraction form
    1,229.27/1,836.71 = 1,186.21/x
  3. Step 3: Cross multiply
    1,229.27x = 1,836.71 × 1,186.21
  4. Step 4: Simplify right side
    1,229.27x = 2,178,724.58
  5. Step 5: Solve for x
    x = 2,178,724.58/1,229.27
  6. Step 6: Final answer
    x = 1,772.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.