Home / 6,831.60-9,426.42-3,847.20

Finding the Fourth Proportional to 6,831.60, 9,426.42 and 3,847.20

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Solution

The fourth proportional to 6,831.60, 9,426.42 and 3,847.20 is: 5,308.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,831.60 : 9,426.42 = 3,847.20 : x
  2. Step 2: Convert to fraction form
    6,831.60/9,426.42 = 3,847.20/x
  3. Step 3: Cross multiply
    6,831.60x = 9,426.42 × 3,847.20
  4. Step 4: Simplify right side
    6,831.60x = 36,265,323.02
  5. Step 5: Solve for x
    x = 36,265,323.02/6,831.60
  6. Step 6: Final answer
    x = 5,308.47

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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.