Home / 1,939.06-2,908.60-1,321.23

Finding the Fourth Proportional to 1,939.06, 2,908.60 and 1,321.23

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Solution

The fourth proportional to 1,939.06, 2,908.60 and 1,321.23 is: 1,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.06 : 2,908.60 = 1,321.23 : x
  2. Step 2: Convert to fraction form
    1,939.06/2,908.60 = 1,321.23/x
  3. Step 3: Cross multiply
    1,939.06x = 2,908.60 × 1,321.23
  4. Step 4: Simplify right side
    1,939.06x = 3,842,929.58
  5. Step 5: Solve for x
    x = 3,842,929.58/1,939.06
  6. Step 6: Final answer
    x = 1,981.85

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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.