Home / 7,831.60-11,739.20-2,635.68

Finding the Fourth Proportional to 7,831.60, 11,739.20 and 2,635.68

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Solution

The fourth proportional to 7,831.60, 11,739.20 and 2,635.68 is: 3,950.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,831.60 : 11,739.20 = 2,635.68 : x
  2. Step 2: Convert to fraction form
    7,831.60/11,739.20 = 2,635.68/x
  3. Step 3: Cross multiply
    7,831.60x = 11,739.20 × 2,635.68
  4. Step 4: Simplify right side
    7,831.60x = 30,940,774.66
  5. Step 5: Solve for x
    x = 30,940,774.66/7,831.60
  6. Step 6: Final answer
    x = 3,950.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.