Home / 1,447.38-2,171.48-1,229.55

Finding the Fourth Proportional to 1,447.38, 2,171.48 and 1,229.55

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Solution

The fourth proportional to 1,447.38, 2,171.48 and 1,229.55 is: 1,844.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.38 : 2,171.48 = 1,229.55 : x
  2. Step 2: Convert to fraction form
    1,447.38/2,171.48 = 1,229.55/x
  3. Step 3: Cross multiply
    1,447.38x = 2,171.48 × 1,229.55
  4. Step 4: Simplify right side
    1,447.38x = 2,669,928.94
  5. Step 5: Solve for x
    x = 2,669,928.94/1,447.38
  6. Step 6: Final answer
    x = 1,844.66

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1.5x scale

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.