Home / 1,939.39-2,676.30-1,055.17

Finding the Fourth Proportional to 1,939.39, 2,676.30 and 1,055.17

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Solution

The fourth proportional to 1,939.39, 2,676.30 and 1,055.17 is: 1,456.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.39 : 2,676.30 = 1,055.17 : x
  2. Step 2: Convert to fraction form
    1,939.39/2,676.30 = 1,055.17/x
  3. Step 3: Cross multiply
    1,939.39x = 2,676.30 × 1,055.17
  4. Step 4: Simplify right side
    1,939.39x = 2,823,951.47
  5. Step 5: Solve for x
    x = 2,823,951.47/1,939.39
  6. Step 6: Final answer
    x = 1,456.10

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1.5x scale

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.