Home / 1,982.85-2,732.92-1,318.52

Finding the Fourth Proportional to 1,982.85, 2,732.92 and 1,318.52

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Solution

The fourth proportional to 1,982.85, 2,732.92 and 1,318.52 is: 1,817.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.85 : 2,732.92 = 1,318.52 : x
  2. Step 2: Convert to fraction form
    1,982.85/2,732.92 = 1,318.52/x
  3. Step 3: Cross multiply
    1,982.85x = 2,732.92 × 1,318.52
  4. Step 4: Simplify right side
    1,982.85x = 3,603,392.72
  5. Step 5: Solve for x
    x = 3,603,392.72/1,982.85
  6. Step 6: Final answer
    x = 1,817.28

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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.