Home / 1,939.54-2,676.62-1,055.40

Finding the Fourth Proportional to 1,939.54, 2,676.62 and 1,055.40

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Solution

The fourth proportional to 1,939.54, 2,676.62 and 1,055.40 is: 1,456.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.54 : 2,676.62 = 1,055.40 : x
  2. Step 2: Convert to fraction form
    1,939.54/2,676.62 = 1,055.40/x
  3. Step 3: Cross multiply
    1,939.54x = 2,676.62 × 1,055.40
  4. Step 4: Simplify right side
    1,939.54x = 2,824,904.75
  5. Step 5: Solve for x
    x = 2,824,904.75/1,939.54
  6. Step 6: Final answer
    x = 1,456.48

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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.