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Finding the Fourth Proportional to 3,270.62, 4,905.89 and 805.46

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Solution

The fourth proportional to 3,270.62, 4,905.89 and 805.46 is: 1,208.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.62 : 4,905.89 = 805.46 : x
  2. Step 2: Convert to fraction form
    3,270.62/4,905.89 = 805.46/x
  3. Step 3: Cross multiply
    3,270.62x = 4,905.89 × 805.46
  4. Step 4: Simplify right side
    3,270.62x = 3,951,506.40
  5. Step 5: Solve for x
    x = 3,951,506.40/3,270.62
  6. Step 6: Final answer
    x = 1,208.18

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1.5x scale

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.