Home / 1,939.66-2,676.79-1,100.40

Finding the Fourth Proportional to 1,939.66, 2,676.79 and 1,100.40

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Solution

The fourth proportional to 1,939.66, 2,676.79 and 1,100.40 is: 1,518.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.66 : 2,676.79 = 1,100.40 : x
  2. Step 2: Convert to fraction form
    1,939.66/2,676.79 = 1,100.40/x
  3. Step 3: Cross multiply
    1,939.66x = 2,676.79 × 1,100.40
  4. Step 4: Simplify right side
    1,939.66x = 2,945,547.66
  5. Step 5: Solve for x
    x = 2,945,547.66/1,939.66
  6. Step 6: Final answer
    x = 1,518.59

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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.