Home / 1,982.49-2,738.13-1,318.19

Finding the Fourth Proportional to 1,982.49, 2,738.13 and 1,318.19

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Solution

The fourth proportional to 1,982.49, 2,738.13 and 1,318.19 is: 1,820.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.49 : 2,738.13 = 1,318.19 : x
  2. Step 2: Convert to fraction form
    1,982.49/2,738.13 = 1,318.19/x
  3. Step 3: Cross multiply
    1,982.49x = 2,738.13 × 1,318.19
  4. Step 4: Simplify right side
    1,982.49x = 3,609,375.58
  5. Step 5: Solve for x
    x = 3,609,375.58/1,982.49
  6. Step 6: Final answer
    x = 1,820.63

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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.