Home / 1,940.32-2,678.16-1,194.40

Finding the Fourth Proportional to 1,940.32, 2,678.16 and 1,194.40

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Solution

The fourth proportional to 1,940.32, 2,678.16 and 1,194.40 is: 1,648.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.32 : 2,678.16 = 1,194.40 : x
  2. Step 2: Convert to fraction form
    1,940.32/2,678.16 = 1,194.40/x
  3. Step 3: Cross multiply
    1,940.32x = 2,678.16 × 1,194.40
  4. Step 4: Simplify right side
    1,940.32x = 3,198,794.30
  5. Step 5: Solve for x
    x = 3,198,794.30/1,940.32
  6. Step 6: Final answer
    x = 1,648.59

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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.