Home / 6,831.92-9,428.27-3,999.56

Finding the Fourth Proportional to 6,831.92, 9,428.27 and 3,999.56

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Solution

The fourth proportional to 6,831.92, 9,428.27 and 3,999.56 is: 5,519.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,831.92 : 9,428.27 = 3,999.56 : x
  2. Step 2: Convert to fraction form
    6,831.92/9,428.27 = 3,999.56/x
  3. Step 3: Cross multiply
    6,831.92x = 9,428.27 × 3,999.56
  4. Step 4: Simplify right side
    6,831.92x = 37,708,864.42
  5. Step 5: Solve for x
    x = 37,708,864.42/6,831.92
  6. Step 6: Final answer
    x = 5,519.52

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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.