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Finding the Fourth Proportional to 2,193.41, 3,290.52 and 806.60

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Solution

The fourth proportional to 2,193.41, 3,290.52 and 806.60 is: 1,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,193.41 : 3,290.52 = 806.60 : x
  2. Step 2: Convert to fraction form
    2,193.41/3,290.52 = 806.60/x
  3. Step 3: Cross multiply
    2,193.41x = 3,290.52 × 806.60
  4. Step 4: Simplify right side
    2,193.41x = 2,654,133.43
  5. Step 5: Solve for x
    x = 2,654,133.43/2,193.41
  6. Step 6: Final answer
    x = 1,210.05

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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.