Home / 1,939.67-2,676.75-1,055.47

Finding the Fourth Proportional to 1,939.67, 2,676.75 and 1,055.47

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Solution

The fourth proportional to 1,939.67, 2,676.75 and 1,055.47 is: 1,456.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.67 : 2,676.75 = 1,055.47 : x
  2. Step 2: Convert to fraction form
    1,939.67/2,676.75 = 1,055.47/x
  3. Step 3: Cross multiply
    1,939.67x = 2,676.75 × 1,055.47
  4. Step 4: Simplify right side
    1,939.67x = 2,825,222.63
  5. Step 5: Solve for x
    x = 2,825,222.63/1,939.67
  6. Step 6: Final answer
    x = 1,456.55

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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.