Home / 9,831.10-13,584.19-7,857.94

Finding the Fourth Proportional to 9,831.10, 13,584.19 and 7,857.94

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Solution

The fourth proportional to 9,831.10, 13,584.19 and 7,857.94 is: 10,857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,831.10 : 13,584.19 = 7,857.94 : x
  2. Step 2: Convert to fraction form
    9,831.10/13,584.19 = 7,857.94/x
  3. Step 3: Cross multiply
    9,831.10x = 13,584.19 × 7,857.94
  4. Step 4: Simplify right side
    9,831.10x = 106,743,749.97
  5. Step 5: Solve for x
    x = 106,743,749.97/9,831.10
  6. Step 6: Final answer
    x = 10,857.76

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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.