Home / 1,980.40-2,732.60-1,183.44

Finding the Fourth Proportional to 1,980.40, 2,732.60 and 1,183.44

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Solution

The fourth proportional to 1,980.40, 2,732.60 and 1,183.44 is: 1,632.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.40 : 2,732.60 = 1,183.44 : x
  2. Step 2: Convert to fraction form
    1,980.40/2,732.60 = 1,183.44/x
  3. Step 3: Cross multiply
    1,980.40x = 2,732.60 × 1,183.44
  4. Step 4: Simplify right side
    1,980.40x = 3,233,868.14
  5. Step 5: Solve for x
    x = 3,233,868.14/1,980.40
  6. Step 6: Final answer
    x = 1,632.94

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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.