Home / 2,006.12-2,768.42-1,121.92

Finding the Fourth Proportional to 2,006.12, 2,768.42 and 1,121.92

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Solution

The fourth proportional to 2,006.12, 2,768.42 and 1,121.92 is: 1,548.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.12 : 2,768.42 = 1,121.92 : x
  2. Step 2: Convert to fraction form
    2,006.12/2,768.42 = 1,121.92/x
  3. Step 3: Cross multiply
    2,006.12x = 2,768.42 × 1,121.92
  4. Step 4: Simplify right side
    2,006.12x = 3,105,945.77
  5. Step 5: Solve for x
    x = 3,105,945.77/2,006.12
  6. Step 6: Final answer
    x = 1,548.24

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1.5x scale

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.