Home / 2,811.62-3,880.37-2,065.83

Finding the Fourth Proportional to 2,811.62, 3,880.37 and 2,065.83

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Solution

The fourth proportional to 2,811.62, 3,880.37 and 2,065.83 is: 2,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.62 : 3,880.37 = 2,065.83 : x
  2. Step 2: Convert to fraction form
    2,811.62/3,880.37 = 2,065.83/x
  3. Step 3: Cross multiply
    2,811.62x = 3,880.37 × 2,065.83
  4. Step 4: Simplify right side
    2,811.62x = 8,016,201.89
  5. Step 5: Solve for x
    x = 8,016,201.89/2,811.62
  6. Step 6: Final answer
    x = 2,851.10

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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.