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Finding the Fourth Proportional to 3,310.89, 4,966.37 and 845.70

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Solution

The fourth proportional to 3,310.89, 4,966.37 and 845.70 is: 1,268.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,310.89 : 4,966.37 = 845.70 : x
  2. Step 2: Convert to fraction form
    3,310.89/4,966.37 = 845.70/x
  3. Step 3: Cross multiply
    3,310.89x = 4,966.37 × 845.70
  4. Step 4: Simplify right side
    3,310.89x = 4,200,054.88
  5. Step 5: Solve for x
    x = 4,200,054.88/3,310.89
  6. Step 6: Final answer
    x = 1,268.56

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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.