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Finding the Fourth Proportional to 2,489.01, 3,731.69 and 845.12

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Solution

The fourth proportional to 2,489.01, 3,731.69 and 845.12 is: 1,267.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.01 : 3,731.69 = 845.12 : x
  2. Step 2: Convert to fraction form
    2,489.01/3,731.69 = 845.12/x
  3. Step 3: Cross multiply
    2,489.01x = 3,731.69 × 845.12
  4. Step 4: Simplify right side
    2,489.01x = 3,153,702.97
  5. Step 5: Solve for x
    x = 3,153,702.97/2,489.01
  6. Step 6: Final answer
    x = 1,267.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.