Home / 3,091.11-4,265.11-1,831.61

Finding the Fourth Proportional to 3,091.11, 4,265.11 and 1,831.61

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Solution

The fourth proportional to 3,091.11, 4,265.11 and 1,831.61 is: 2,527.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.11 : 4,265.11 = 1,831.61 : x
  2. Step 2: Convert to fraction form
    3,091.11/4,265.11 = 1,831.61/x
  3. Step 3: Cross multiply
    3,091.11x = 4,265.11 × 1,831.61
  4. Step 4: Simplify right side
    3,091.11x = 7,812,020.78
  5. Step 5: Solve for x
    x = 7,812,020.78/3,091.11
  6. Step 6: Final answer
    x = 2,527.25

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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.