Home / 1,942.40-2,680.09-1,103.04

Finding the Fourth Proportional to 1,942.40, 2,680.09 and 1,103.04

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Solution

The fourth proportional to 1,942.40, 2,680.09 and 1,103.04 is: 1,521.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.40 : 2,680.09 = 1,103.04 : x
  2. Step 2: Convert to fraction form
    1,942.40/2,680.09 = 1,103.04/x
  3. Step 3: Cross multiply
    1,942.40x = 2,680.09 × 1,103.04
  4. Step 4: Simplify right side
    1,942.40x = 2,956,243.72
  5. Step 5: Solve for x
    x = 2,956,243.72/1,942.40
  6. Step 6: Final answer
    x = 1,521.95

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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.