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Finding the Fourth Proportional to 2,775.94, 3,825.03 and 1,890.21

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Solution

The fourth proportional to 2,775.94, 3,825.03 and 1,890.21 is: 2,604.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.94 : 3,825.03 = 1,890.21 : x
  2. Step 2: Convert to fraction form
    2,775.94/3,825.03 = 1,890.21/x
  3. Step 3: Cross multiply
    2,775.94x = 3,825.03 × 1,890.21
  4. Step 4: Simplify right side
    2,775.94x = 7,230,109.96
  5. Step 5: Solve for x
    x = 7,230,109.96/2,775.94
  6. Step 6: Final answer
    x = 2,604.56

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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.