Home / 2,831.12-3,906.24-1,651.76

Finding the Fourth Proportional to 2,831.12, 3,906.24 and 1,651.76

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Solution

The fourth proportional to 2,831.12, 3,906.24 and 1,651.76 is: 2,279.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.12 : 3,906.24 = 1,651.76 : x
  2. Step 2: Convert to fraction form
    2,831.12/3,906.24 = 1,651.76/x
  3. Step 3: Cross multiply
    2,831.12x = 3,906.24 × 1,651.76
  4. Step 4: Simplify right side
    2,831.12x = 6,452,170.98
  5. Step 5: Solve for x
    x = 6,452,170.98/2,831.12
  6. Step 6: Final answer
    x = 2,279.02

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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.