Home / 2,831.28-4,226.21-2,622.81

Finding the Fourth Proportional to 2,831.28, 4,226.21 and 2,622.81

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Solution

The fourth proportional to 2,831.28, 4,226.21 and 2,622.81 is: 3,915.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.28 : 4,226.21 = 2,622.81 : x
  2. Step 2: Convert to fraction form
    2,831.28/4,226.21 = 2,622.81/x
  3. Step 3: Cross multiply
    2,831.28x = 4,226.21 × 2,622.81
  4. Step 4: Simplify right side
    2,831.28x = 11,084,545.85
  5. Step 5: Solve for x
    x = 11,084,545.85/2,831.28
  6. Step 6: Final answer
    x = 3,915.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.