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Finding the Fourth Proportional to 1,806.62, 2,708.62 and 1,220.17

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Solution

The fourth proportional to 1,806.62, 2,708.62 and 1,220.17 is: 1,829.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.62 : 2,708.62 = 1,220.17 : x
  2. Step 2: Convert to fraction form
    1,806.62/2,708.62 = 1,220.17/x
  3. Step 3: Cross multiply
    1,806.62x = 2,708.62 × 1,220.17
  4. Step 4: Simplify right side
    1,806.62x = 3,304,976.87
  5. Step 5: Solve for x
    x = 3,304,976.87/1,806.62
  6. Step 6: Final answer
    x = 1,829.37

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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.