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Finding the Fourth Proportional to 3,880.44, 5,357.44 and 2,556.39

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Solution

The fourth proportional to 3,880.44, 5,357.44 and 2,556.39 is: 3,529.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.44 : 5,357.44 = 2,556.39 : x
  2. Step 2: Convert to fraction form
    3,880.44/5,357.44 = 2,556.39/x
  3. Step 3: Cross multiply
    3,880.44x = 5,357.44 × 2,556.39
  4. Step 4: Simplify right side
    3,880.44x = 13,695,729.33
  5. Step 5: Solve for x
    x = 13,695,729.33/3,880.44
  6. Step 6: Final answer
    x = 3,529.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.