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Finding the Fourth Proportional to 1,863.16, 2,794.34 and 938.44

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Solution

The fourth proportional to 1,863.16, 2,794.34 and 938.44 is: 1,407.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.16 : 2,794.34 = 938.44 : x
  2. Step 2: Convert to fraction form
    1,863.16/2,794.34 = 938.44/x
  3. Step 3: Cross multiply
    1,863.16x = 2,794.34 × 938.44
  4. Step 4: Simplify right side
    1,863.16x = 2,622,320.43
  5. Step 5: Solve for x
    x = 2,622,320.43/1,863.16
  6. Step 6: Final answer
    x = 1,407.46

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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.