Home / 1,912.28-2,640.50-1,558.26

Finding the Fourth Proportional to 1,912.28, 2,640.50 and 1,558.26

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Solution

The fourth proportional to 1,912.28, 2,640.50 and 1,558.26 is: 2,151.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.28 : 2,640.50 = 1,558.26 : x
  2. Step 2: Convert to fraction form
    1,912.28/2,640.50 = 1,558.26/x
  3. Step 3: Cross multiply
    1,912.28x = 2,640.50 × 1,558.26
  4. Step 4: Simplify right side
    1,912.28x = 4,114,576.22
  5. Step 5: Solve for x
    x = 4,114,576.22/1,912.28
  6. Step 6: Final answer
    x = 2,151.66

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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.