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Finding the Fourth Proportional to 6,856.77, 9,462.43 and 3,831.75

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Solution

The fourth proportional to 6,856.77, 9,462.43 and 3,831.75 is: 5,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,856.77 : 9,462.43 = 3,831.75 : x
  2. Step 2: Convert to fraction form
    6,856.77/9,462.43 = 3,831.75/x
  3. Step 3: Cross multiply
    6,856.77x = 9,462.43 × 3,831.75
  4. Step 4: Simplify right side
    6,856.77x = 36,257,680.23
  5. Step 5: Solve for x
    x = 36,257,680.23/6,856.77
  6. Step 6: Final answer
    x = 5,287.87

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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.