Home / 1,942.42-2,678.79-1,279.03

Finding the Fourth Proportional to 1,942.42, 2,678.79 and 1,279.03

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Solution

The fourth proportional to 1,942.42, 2,678.79 and 1,279.03 is: 1,763.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.42 : 2,678.79 = 1,279.03 : x
  2. Step 2: Convert to fraction form
    1,942.42/2,678.79 = 1,279.03/x
  3. Step 3: Cross multiply
    1,942.42x = 2,678.79 × 1,279.03
  4. Step 4: Simplify right side
    1,942.42x = 3,426,252.77
  5. Step 5: Solve for x
    x = 3,426,252.77/1,942.42
  6. Step 6: Final answer
    x = 1,763.91

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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.