Home / 3,699.74-5,105.70-2,021.15

Finding the Fourth Proportional to 3,699.74, 5,105.70 and 2,021.15

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Solution

The fourth proportional to 3,699.74, 5,105.70 and 2,021.15 is: 2,789.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,699.74 : 5,105.70 = 2,021.15 : x
  2. Step 2: Convert to fraction form
    3,699.74/5,105.70 = 2,021.15/x
  3. Step 3: Cross multiply
    3,699.74x = 5,105.70 × 2,021.15
  4. Step 4: Simplify right side
    3,699.74x = 10,319,360.03
  5. Step 5: Solve for x
    x = 10,319,360.03/3,699.74
  6. Step 6: Final answer
    x = 2,789.22

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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.