Home / 1,638.20-2,260.66-892.13

Finding the Fourth Proportional to 1,638.20, 2,260.66 and 892.13

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Solution

The fourth proportional to 1,638.20, 2,260.66 and 892.13 is: 1,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.20 : 2,260.66 = 892.13 : x
  2. Step 2: Convert to fraction form
    1,638.20/2,260.66 = 892.13/x
  3. Step 3: Cross multiply
    1,638.20x = 2,260.66 × 892.13
  4. Step 4: Simplify right side
    1,638.20x = 2,016,806.03
  5. Step 5: Solve for x
    x = 2,016,806.03/1,638.20
  6. Step 6: Final answer
    x = 1,231.11

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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.