Home / 1,939.31-2,676.26-1,055.11

Finding the Fourth Proportional to 1,939.31, 2,676.26 and 1,055.11

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Solution

The fourth proportional to 1,939.31, 2,676.26 and 1,055.11 is: 1,456.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.31 : 2,676.26 = 1,055.11 : x
  2. Step 2: Convert to fraction form
    1,939.31/2,676.26 = 1,055.11/x
  3. Step 3: Cross multiply
    1,939.31x = 2,676.26 × 1,055.11
  4. Step 4: Simplify right side
    1,939.31x = 2,823,730.03
  5. Step 5: Solve for x
    x = 2,823,730.03/1,939.31
  6. Step 6: Final answer
    x = 1,456.05

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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.