Home / 2,850.21-3,933.48-2,011.20

Finding the Fourth Proportional to 2,850.21, 3,933.48 and 2,011.20

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Solution

The fourth proportional to 2,850.21, 3,933.48 and 2,011.20 is: 2,775.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.21 : 3,933.48 = 2,011.20 : x
  2. Step 2: Convert to fraction form
    2,850.21/3,933.48 = 2,011.20/x
  3. Step 3: Cross multiply
    2,850.21x = 3,933.48 × 2,011.20
  4. Step 4: Simplify right side
    2,850.21x = 7,911,014.98
  5. Step 5: Solve for x
    x = 7,911,014.98/2,850.21
  6. Step 6: Final answer
    x = 2,775.59

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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.