Home / 1,912.29-2,867.19-816.36

Finding the Fourth Proportional to 1,912.29, 2,867.19 and 816.36

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Solution

The fourth proportional to 1,912.29, 2,867.19 and 816.36 is: 1,224.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.29 : 2,867.19 = 816.36 : x
  2. Step 2: Convert to fraction form
    1,912.29/2,867.19 = 816.36/x
  3. Step 3: Cross multiply
    1,912.29x = 2,867.19 × 816.36
  4. Step 4: Simplify right side
    1,912.29x = 2,340,659.23
  5. Step 5: Solve for x
    x = 2,340,659.23/1,912.29
  6. Step 6: Final answer
    x = 1,224.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.