Home / 1,912.26-2,638.87-1,072.97

Finding the Fourth Proportional to 1,912.26, 2,638.87 and 1,072.97

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Solution

The fourth proportional to 1,912.26, 2,638.87 and 1,072.97 is: 1,480.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.26 : 2,638.87 = 1,072.97 : x
  2. Step 2: Convert to fraction form
    1,912.26/2,638.87 = 1,072.97/x
  3. Step 3: Cross multiply
    1,912.26x = 2,638.87 × 1,072.97
  4. Step 4: Simplify right side
    1,912.26x = 2,831,428.34
  5. Step 5: Solve for x
    x = 2,831,428.34/1,912.26
  6. Step 6: Final answer
    x = 1,480.67

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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.