Home / 1,983.42-2,986.92-1,439.39

Finding the Fourth Proportional to 1,983.42, 2,986.92 and 1,439.39

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Solution

The fourth proportional to 1,983.42, 2,986.92 and 1,439.39 is: 2,167.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.42 : 2,986.92 = 1,439.39 : x
  2. Step 2: Convert to fraction form
    1,983.42/2,986.92 = 1,439.39/x
  3. Step 3: Cross multiply
    1,983.42x = 2,986.92 × 1,439.39
  4. Step 4: Simplify right side
    1,983.42x = 4,299,350.25
  5. Step 5: Solve for x
    x = 4,299,350.25/1,983.42
  6. Step 6: Final answer
    x = 2,167.64

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.