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Finding the Fourth Proportional to 2,608.85, 3,599.62 and 1,489.43

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Solution

The fourth proportional to 2,608.85, 3,599.62 and 1,489.43 is: 2,055.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608.85 : 3,599.62 = 1,489.43 : x
  2. Step 2: Convert to fraction form
    2,608.85/3,599.62 = 1,489.43/x
  3. Step 3: Cross multiply
    2,608.85x = 3,599.62 × 1,489.43
  4. Step 4: Simplify right side
    2,608.85x = 5,361,364.02
  5. Step 5: Solve for x
    x = 5,361,364.02/2,608.85
  6. Step 6: Final answer
    x = 2,055.07

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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.