Home / 1,972.09-2,722.94-1,383.42

Finding the Fourth Proportional to 1,972.09, 2,722.94 and 1,383.42

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Solution

The fourth proportional to 1,972.09, 2,722.94 and 1,383.42 is: 1,910.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.09 : 2,722.94 = 1,383.42 : x
  2. Step 2: Convert to fraction form
    1,972.09/2,722.94 = 1,383.42/x
  3. Step 3: Cross multiply
    1,972.09x = 2,722.94 × 1,383.42
  4. Step 4: Simplify right side
    1,972.09x = 3,766,973.11
  5. Step 5: Solve for x
    x = 3,766,973.11/1,972.09
  6. Step 6: Final answer
    x = 1,910.15

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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.