Home / 1,821.71-2,733.25-1,091.81

Finding the Fourth Proportional to 1,821.71, 2,733.25 and 1,091.81

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Solution

The fourth proportional to 1,821.71, 2,733.25 and 1,091.81 is: 1,638.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.71 : 2,733.25 = 1,091.81 : x
  2. Step 2: Convert to fraction form
    1,821.71/2,733.25 = 1,091.81/x
  3. Step 3: Cross multiply
    1,821.71x = 2,733.25 × 1,091.81
  4. Step 4: Simplify right side
    1,821.71x = 2,984,189.68
  5. Step 5: Solve for x
    x = 2,984,189.68/1,821.71
  6. Step 6: Final answer
    x = 1,638.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.