Home / 1,278.22-1,771.06-1,250.54

Finding the Fourth Proportional to 1,278.22, 1,771.06 and 1,250.54

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Solution

The fourth proportional to 1,278.22, 1,771.06 and 1,250.54 is: 1,732.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.22 : 1,771.06 = 1,250.54 : x
  2. Step 2: Convert to fraction form
    1,278.22/1,771.06 = 1,250.54/x
  3. Step 3: Cross multiply
    1,278.22x = 1,771.06 × 1,250.54
  4. Step 4: Simplify right side
    1,278.22x = 2,214,780.68
  5. Step 5: Solve for x
    x = 2,214,780.68/1,278.22
  6. Step 6: Final answer
    x = 1,732.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.