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Finding the Fourth Proportional to 3,879.56, 5,351.62 and 2,460.64

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Solution

The fourth proportional to 3,879.56, 5,351.62 and 2,460.64 is: 3,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.56 : 5,351.62 = 2,460.64 : x
  2. Step 2: Convert to fraction form
    3,879.56/5,351.62 = 2,460.64/x
  3. Step 3: Cross multiply
    3,879.56x = 5,351.62 × 2,460.64
  4. Step 4: Simplify right side
    3,879.56x = 13,168,410.24
  5. Step 5: Solve for x
    x = 13,168,410.24/3,879.56
  6. Step 6: Final answer
    x = 3,394.31

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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.