Home / 1,939.73-2,911.48-1,385.06

Finding the Fourth Proportional to 1,939.73, 2,911.48 and 1,385.06

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Solution

The fourth proportional to 1,939.73, 2,911.48 and 1,385.06 is: 2,078.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.73 : 2,911.48 = 1,385.06 : x
  2. Step 2: Convert to fraction form
    1,939.73/2,911.48 = 1,385.06/x
  3. Step 3: Cross multiply
    1,939.73x = 2,911.48 × 1,385.06
  4. Step 4: Simplify right side
    1,939.73x = 4,032,556.47
  5. Step 5: Solve for x
    x = 4,032,556.47/1,939.73
  6. Step 6: Final answer
    x = 2,078.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.