Home / 3,824.72-5,277.79-2,145.90

Finding the Fourth Proportional to 3,824.72, 5,277.79 and 2,145.90

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Solution

The fourth proportional to 3,824.72, 5,277.79 and 2,145.90 is: 2,961.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,824.72 : 5,277.79 = 2,145.90 : x
  2. Step 2: Convert to fraction form
    3,824.72/5,277.79 = 2,145.90/x
  3. Step 3: Cross multiply
    3,824.72x = 5,277.79 × 2,145.90
  4. Step 4: Simplify right side
    3,824.72x = 11,325,609.56
  5. Step 5: Solve for x
    x = 11,325,609.56/3,824.72
  6. Step 6: Final answer
    x = 2,961.16

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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.