Home / 1,638.17-2,260.73-892.09

Finding the Fourth Proportional to 1,638.17, 2,260.73 and 892.09

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Solution

The fourth proportional to 1,638.17, 2,260.73 and 892.09 is: 1,231.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.17 : 2,260.73 = 892.09 : x
  2. Step 2: Convert to fraction form
    1,638.17/2,260.73 = 892.09/x
  3. Step 3: Cross multiply
    1,638.17x = 2,260.73 × 892.09
  4. Step 4: Simplify right side
    1,638.17x = 2,016,779.68
  5. Step 5: Solve for x
    x = 2,016,779.68/1,638.17
  6. Step 6: Final answer
    x = 1,231.12

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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.