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Finding the Fourth Proportional to 5,168.96, 7,133.17 and 2,811.10

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Solution

The fourth proportional to 5,168.96, 7,133.17 and 2,811.10 is: 3,879.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,168.96 : 7,133.17 = 2,811.10 : x
  2. Step 2: Convert to fraction form
    5,168.96/7,133.17 = 2,811.10/x
  3. Step 3: Cross multiply
    5,168.96x = 7,133.17 × 2,811.10
  4. Step 4: Simplify right side
    5,168.96x = 20,052,029.33
  5. Step 5: Solve for x
    x = 20,052,029.33/5,168.96
  6. Step 6: Final answer
    x = 3,879.32

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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.