Home / 2,791.21-3,851.85-1,612.21

Finding the Fourth Proportional to 2,791.21, 3,851.85 and 1,612.21

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Solution

The fourth proportional to 2,791.21, 3,851.85 and 1,612.21 is: 2,224.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,791.21 : 3,851.85 = 1,612.21 : x
  2. Step 2: Convert to fraction form
    2,791.21/3,851.85 = 1,612.21/x
  3. Step 3: Cross multiply
    2,791.21x = 3,851.85 × 1,612.21
  4. Step 4: Simplify right side
    2,791.21x = 6,209,991.09
  5. Step 5: Solve for x
    x = 6,209,991.09/2,791.21
  6. Step 6: Final answer
    x = 2,224.84

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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.