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Finding the Fourth Proportional to 1,912.41, 2,639.12 and 1,073.00

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Solution

The fourth proportional to 1,912.41, 2,639.12 and 1,073.00 is: 1,480.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.41 : 2,639.12 = 1,073.00 : x
  2. Step 2: Convert to fraction form
    1,912.41/2,639.12 = 1,073.00/x
  3. Step 3: Cross multiply
    1,912.41x = 2,639.12 × 1,073.00
  4. Step 4: Simplify right side
    1,912.41x = 2,831,765.25
  5. Step 5: Solve for x
    x = 2,831,765.25/1,912.41
  6. Step 6: Final answer
    x = 1,480.73

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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.