Home / 1,939.38-2,676.26-1,100.12

Finding the Fourth Proportional to 1,939.38, 2,676.26 and 1,100.12

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Solution

The fourth proportional to 1,939.38, 2,676.26 and 1,100.12 is: 1,518.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.38 : 2,676.26 = 1,100.12 : x
  2. Step 2: Convert to fraction form
    1,939.38/2,676.26 = 1,100.12/x
  3. Step 3: Cross multiply
    1,939.38x = 2,676.26 × 1,100.12
  4. Step 4: Simplify right side
    1,939.38x = 2,944,207.15
  5. Step 5: Solve for x
    x = 2,944,207.15/1,939.38
  6. Step 6: Final answer
    x = 1,518.12

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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.