Home / 6,831.20-10,246.80-1,900.85

Finding the Fourth Proportional to 6,831.20, 10,246.80 and 1,900.85

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Solution

The fourth proportional to 6,831.20, 10,246.80 and 1,900.85 is: 2,851.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,831.20 : 10,246.80 = 1,900.85 : x
  2. Step 2: Convert to fraction form
    6,831.20/10,246.80 = 1,900.85/x
  3. Step 3: Cross multiply
    6,831.20x = 10,246.80 × 1,900.85
  4. Step 4: Simplify right side
    6,831.20x = 19,477,578.55
  5. Step 5: Solve for x
    x = 19,477,578.55/6,831.20
  6. Step 6: Final answer
    x = 2,851.27

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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.