Home / 2,831.24-3,906.93-1,711.51

Finding the Fourth Proportional to 2,831.24, 3,906.93 and 1,711.51

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Solution

The fourth proportional to 2,831.24, 3,906.93 and 1,711.51 is: 2,361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.24 : 3,906.93 = 1,711.51 : x
  2. Step 2: Convert to fraction form
    2,831.24/3,906.93 = 1,711.51/x
  3. Step 3: Cross multiply
    2,831.24x = 3,906.93 × 1,711.51
  4. Step 4: Simplify right side
    2,831.24x = 6,686,749.76
  5. Step 5: Solve for x
    x = 6,686,749.76/2,831.24
  6. Step 6: Final answer
    x = 2,361.77

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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.