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Finding the Fourth Proportional to 3,697.70, 5,102.79 and 2,019.09

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Solution

The fourth proportional to 3,697.70, 5,102.79 and 2,019.09 is: 2,786.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,697.70 : 5,102.79 = 2,019.09 : x
  2. Step 2: Convert to fraction form
    3,697.70/5,102.79 = 2,019.09/x
  3. Step 3: Cross multiply
    3,697.70x = 5,102.79 × 2,019.09
  4. Step 4: Simplify right side
    3,697.70x = 10,302,992.26
  5. Step 5: Solve for x
    x = 10,302,992.26/3,697.70
  6. Step 6: Final answer
    x = 2,786.33

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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.