Home / 2,006.10-2,768.49-1,121.90

Finding the Fourth Proportional to 2,006.10, 2,768.49 and 1,121.90

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Solution

The fourth proportional to 2,006.10, 2,768.49 and 1,121.90 is: 1,548.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.10 : 2,768.49 = 1,121.90 : x
  2. Step 2: Convert to fraction form
    2,006.10/2,768.49 = 1,121.90/x
  3. Step 3: Cross multiply
    2,006.10x = 2,768.49 × 1,121.90
  4. Step 4: Simplify right side
    2,006.10x = 3,105,955.09
  5. Step 5: Solve for x
    x = 3,105,955.09/2,006.10
  6. Step 6: Final answer
    x = 1,548.26

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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.