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Finding the Fourth Proportional to 3,255.39, 4,880.39 and 1,869.75

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Solution

The fourth proportional to 3,255.39, 4,880.39 and 1,869.75 is: 2,803.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,255.39 : 4,880.39 = 1,869.75 : x
  2. Step 2: Convert to fraction form
    3,255.39/4,880.39 = 1,869.75/x
  3. Step 3: Cross multiply
    3,255.39x = 4,880.39 × 1,869.75
  4. Step 4: Simplify right side
    3,255.39x = 9,125,099.85
  5. Step 5: Solve for x
    x = 9,125,099.85/3,255.39
  6. Step 6: Final answer
    x = 2,803.07

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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.