Home / 1,982.74-2,733.32-1,391.44

Finding the Fourth Proportional to 1,982.74, 2,733.32 and 1,391.44

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Solution

The fourth proportional to 1,982.74, 2,733.32 and 1,391.44 is: 1,918.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,982.74 : 2,733.32 = 1,391.44 : x
  2. Step 2: Convert to fraction form
    1,982.74/2,733.32 = 1,391.44/x
  3. Step 3: Cross multiply
    1,982.74x = 2,733.32 × 1,391.44
  4. Step 4: Simplify right side
    1,982.74x = 3,803,250.78
  5. Step 5: Solve for x
    x = 3,803,250.78/1,982.74
  6. Step 6: Final answer
    x = 1,918.18

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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.