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Finding the Fourth Proportional to 7,256.41, 10,889.46 and 2,639.41

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Solution

The fourth proportional to 7,256.41, 10,889.46 and 2,639.41 is: 3,960.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,256.41 : 10,889.46 = 2,639.41 : x
  2. Step 2: Convert to fraction form
    7,256.41/10,889.46 = 2,639.41/x
  3. Step 3: Cross multiply
    7,256.41x = 10,889.46 × 2,639.41
  4. Step 4: Simplify right side
    7,256.41x = 28,741,722.39
  5. Step 5: Solve for x
    x = 28,741,722.39/7,256.41
  6. Step 6: Final answer
    x = 3,960.87

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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.