Home / 1,942.08-2,679.68-1,343.64

Finding the Fourth Proportional to 1,942.08, 2,679.68 and 1,343.64

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Solution

The fourth proportional to 1,942.08, 2,679.68 and 1,343.64 is: 1,853.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.08 : 2,679.68 = 1,343.64 : x
  2. Step 2: Convert to fraction form
    1,942.08/2,679.68 = 1,343.64/x
  3. Step 3: Cross multiply
    1,942.08x = 2,679.68 × 1,343.64
  4. Step 4: Simplify right side
    1,942.08x = 3,600,523.57
  5. Step 5: Solve for x
    x = 3,600,523.57/1,942.08
  6. Step 6: Final answer
    x = 1,853.95

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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.