Home / 2,775.93-3,831.39-1,891.11

Finding the Fourth Proportional to 2,775.93, 3,831.39 and 1,891.11

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Solution

The fourth proportional to 2,775.93, 3,831.39 and 1,891.11 is: 2,610.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.93 : 3,831.39 = 1,891.11 : x
  2. Step 2: Convert to fraction form
    2,775.93/3,831.39 = 1,891.11/x
  3. Step 3: Cross multiply
    2,775.93x = 3,831.39 × 1,891.11
  4. Step 4: Simplify right side
    2,775.93x = 7,245,579.94
  5. Step 5: Solve for x
    x = 7,245,579.94/2,775.93
  6. Step 6: Final answer
    x = 2,610.15

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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.