Home / 2,120.73-2,926.22-1,189.23

Finding the Fourth Proportional to 2,120.73, 2,926.22 and 1,189.23

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Solution

The fourth proportional to 2,120.73, 2,926.22 and 1,189.23 is: 1,640.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.73 : 2,926.22 = 1,189.23 : x
  2. Step 2: Convert to fraction form
    2,120.73/2,926.22 = 1,189.23/x
  3. Step 3: Cross multiply
    2,120.73x = 2,926.22 × 1,189.23
  4. Step 4: Simplify right side
    2,120.73x = 3,479,942.66
  5. Step 5: Solve for x
    x = 3,479,942.66/2,120.73
  6. Step 6: Final answer
    x = 1,640.92

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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.