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Finding the Fourth Proportional to 3,311.07, 4,966.59 and 845.88

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Solution

The fourth proportional to 3,311.07, 4,966.59 and 845.88 is: 1,268.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,311.07 : 4,966.59 = 845.88 : x
  2. Step 2: Convert to fraction form
    3,311.07/4,966.59 = 845.88/x
  3. Step 3: Cross multiply
    3,311.07x = 4,966.59 × 845.88
  4. Step 4: Simplify right side
    3,311.07x = 4,201,163.22
  5. Step 5: Solve for x
    x = 4,201,163.22/3,311.07
  6. Step 6: Final answer
    x = 1,268.82

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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.