Home / 3,784.74-5,221.47-2,190.25

Finding the Fourth Proportional to 3,784.74, 5,221.47 and 2,190.25

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Solution

The fourth proportional to 3,784.74, 5,221.47 and 2,190.25 is: 3,021.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,784.74 : 5,221.47 = 2,190.25 : x
  2. Step 2: Convert to fraction form
    3,784.74/5,221.47 = 2,190.25/x
  3. Step 3: Cross multiply
    3,784.74x = 5,221.47 × 2,190.25
  4. Step 4: Simplify right side
    3,784.74x = 11,436,324.67
  5. Step 5: Solve for x
    x = 11,436,324.67/3,784.74
  6. Step 6: Final answer
    x = 3,021.69

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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.