Home / 3,699.88-5,105.84-2,021.36

Finding the Fourth Proportional to 3,699.88, 5,105.84 and 2,021.36

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Solution

The fourth proportional to 3,699.88, 5,105.84 and 2,021.36 is: 2,789.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.88 : 5,105.84 = 2,021.36 : x
  2. Step 2: Convert to fraction form
    3,699.88/5,105.84 = 2,021.36/x
  3. Step 3: Cross multiply
    3,699.88x = 5,105.84 × 2,021.36
  4. Step 4: Simplify right side
    3,699.88x = 10,320,705.11
  5. Step 5: Solve for x
    x = 10,320,705.11/3,699.88
  6. Step 6: Final answer
    x = 2,789.47

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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.