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Finding the Fourth Proportional to 1,990.73, 2,989.55 and 1,834.26

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Solution

The fourth proportional to 1,990.73, 2,989.55 and 1,834.26 is: 2,754.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.73 : 2,989.55 = 1,834.26 : x
  2. Step 2: Convert to fraction form
    1,990.73/2,989.55 = 1,834.26/x
  3. Step 3: Cross multiply
    1,990.73x = 2,989.55 × 1,834.26
  4. Step 4: Simplify right side
    1,990.73x = 5,483,597.04
  5. Step 5: Solve for x
    x = 5,483,597.04/1,990.73
  6. Step 6: Final answer
    x = 2,754.57

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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.