Home / 3,761.48-5,190.76-2,189.54

Finding the Fourth Proportional to 3,761.48, 5,190.76 and 2,189.54

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Solution

The fourth proportional to 3,761.48, 5,190.76 and 2,189.54 is: 3,021.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,761.48 : 5,190.76 = 2,189.54 : x
  2. Step 2: Convert to fraction form
    3,761.48/5,190.76 = 2,189.54/x
  3. Step 3: Cross multiply
    3,761.48x = 5,190.76 × 2,189.54
  4. Step 4: Simplify right side
    3,761.48x = 11,365,376.65
  5. Step 5: Solve for x
    x = 11,365,376.65/3,761.48
  6. Step 6: Final answer
    x = 3,021.52

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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.