Home / 1,980.91-2,733.81-1,096.79

Finding the Fourth Proportional to 1,980.91, 2,733.81 and 1,096.79

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Solution

The fourth proportional to 1,980.91, 2,733.81 and 1,096.79 is: 1,513.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.91 : 2,733.81 = 1,096.79 : x
  2. Step 2: Convert to fraction form
    1,980.91/2,733.81 = 1,096.79/x
  3. Step 3: Cross multiply
    1,980.91x = 2,733.81 × 1,096.79
  4. Step 4: Simplify right side
    1,980.91x = 2,998,418.19
  5. Step 5: Solve for x
    x = 2,998,418.19/1,980.91
  6. Step 6: Final answer
    x = 1,513.66

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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.