Home / 1,939.92-2,676.81-1,100.35

Finding the Fourth Proportional to 1,939.92, 2,676.81 and 1,100.35

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Solution

The fourth proportional to 1,939.92, 2,676.81 and 1,100.35 is: 1,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.92 : 2,676.81 = 1,100.35 : x
  2. Step 2: Convert to fraction form
    1,939.92/2,676.81 = 1,100.35/x
  3. Step 3: Cross multiply
    1,939.92x = 2,676.81 × 1,100.35
  4. Step 4: Simplify right side
    1,939.92x = 2,945,427.88
  5. Step 5: Solve for x
    x = 2,945,427.88/1,939.92
  6. Step 6: Final answer
    x = 1,518.32

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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.