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Finding the Fourth Proportional to 4,906.63, 6,771.32 and 2,811.16

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Solution

The fourth proportional to 4,906.63, 6,771.32 and 2,811.16 is: 3,879.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,906.63 : 6,771.32 = 2,811.16 : x
  2. Step 2: Convert to fraction form
    4,906.63/6,771.32 = 2,811.16/x
  3. Step 3: Cross multiply
    4,906.63x = 6,771.32 × 2,811.16
  4. Step 4: Simplify right side
    4,906.63x = 19,035,238.70
  5. Step 5: Solve for x
    x = 19,035,238.70/4,906.63
  6. Step 6: Final answer
    x = 3,879.50

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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.