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Finding the Fourth Proportional to 1,983.92, 2,980.44 and 1,400.27

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Solution

The fourth proportional to 1,983.92, 2,980.44 and 1,400.27 is: 2,103.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.92 : 2,980.44 = 1,400.27 : x
  2. Step 2: Convert to fraction form
    1,983.92/2,980.44 = 1,400.27/x
  3. Step 3: Cross multiply
    1,983.92x = 2,980.44 × 1,400.27
  4. Step 4: Simplify right side
    1,983.92x = 4,173,420.72
  5. Step 5: Solve for x
    x = 4,173,420.72/1,983.92
  6. Step 6: Final answer
    x = 2,103.62

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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.