Home / 2,809.93-3,873.67-2,211.38

Finding the Fourth Proportional to 2,809.93, 3,873.67 and 2,211.38

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Solution

The fourth proportional to 2,809.93, 3,873.67 and 2,211.38 is: 3,048.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.93 : 3,873.67 = 2,211.38 : x
  2. Step 2: Convert to fraction form
    2,809.93/3,873.67 = 2,211.38/x
  3. Step 3: Cross multiply
    2,809.93x = 3,873.67 × 2,211.38
  4. Step 4: Simplify right side
    2,809.93x = 8,566,173.66
  5. Step 5: Solve for x
    x = 8,566,173.66/2,809.93
  6. Step 6: Final answer
    x = 3,048.54

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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.