Home / 1,905.08-2,862.42-1,212.06

Finding the Fourth Proportional to 1,905.08, 2,862.42 and 1,212.06

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Solution

The fourth proportional to 1,905.08, 2,862.42 and 1,212.06 is: 1,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.08 : 2,862.42 = 1,212.06 : x
  2. Step 2: Convert to fraction form
    1,905.08/2,862.42 = 1,212.06/x
  3. Step 3: Cross multiply
    1,905.08x = 2,862.42 × 1,212.06
  4. Step 4: Simplify right side
    1,905.08x = 3,469,418.72
  5. Step 5: Solve for x
    x = 3,469,418.72/1,905.08
  6. Step 6: Final answer
    x = 1,821.14

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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.