Home / 2,621.78-3,911.67-2,092.22

Finding the Fourth Proportional to 2,621.78, 3,911.67 and 2,092.22

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Solution

The fourth proportional to 2,621.78, 3,911.67 and 2,092.22 is: 3,121.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.78 : 3,911.67 = 2,092.22 : x
  2. Step 2: Convert to fraction form
    2,621.78/3,911.67 = 2,092.22/x
  3. Step 3: Cross multiply
    2,621.78x = 3,911.67 × 2,092.22
  4. Step 4: Simplify right side
    2,621.78x = 8,184,074.21
  5. Step 5: Solve for x
    x = 8,184,074.21/2,621.78
  6. Step 6: Final answer
    x = 3,121.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.