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Finding the Fourth Proportional to 2,489.16, 3,733.61 and 845.72

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Solution

The fourth proportional to 2,489.16, 3,733.61 and 845.72 is: 1,268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.16 : 3,733.61 = 845.72 : x
  2. Step 2: Convert to fraction form
    2,489.16/3,733.61 = 845.72/x
  3. Step 3: Cross multiply
    2,489.16x = 3,733.61 × 845.72
  4. Step 4: Simplify right side
    2,489.16x = 3,157,569.98
  5. Step 5: Solve for x
    x = 3,157,569.98/2,489.16
  6. Step 6: Final answer
    x = 1,268.53

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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.