Home / 1,951.96-2,694.81-1,290.73

Finding the Fourth Proportional to 1,951.96, 2,694.81 and 1,290.73

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Solution

The fourth proportional to 1,951.96, 2,694.81 and 1,290.73 is: 1,781.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.96 : 2,694.81 = 1,290.73 : x
  2. Step 2: Convert to fraction form
    1,951.96/2,694.81 = 1,290.73/x
  3. Step 3: Cross multiply
    1,951.96x = 2,694.81 × 1,290.73
  4. Step 4: Simplify right side
    1,951.96x = 3,478,265.66
  5. Step 5: Solve for x
    x = 3,478,265.66/1,951.96
  6. Step 6: Final answer
    x = 1,781.93

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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.