Home / 3,831.65-5,744.55-1,981.58

Finding the Fourth Proportional to 3,831.65, 5,744.55 and 1,981.58

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Solution

The fourth proportional to 3,831.65, 5,744.55 and 1,981.58 is: 2,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.65 : 5,744.55 = 1,981.58 : x
  2. Step 2: Convert to fraction form
    3,831.65/5,744.55 = 1,981.58/x
  3. Step 3: Cross multiply
    3,831.65x = 5,744.55 × 1,981.58
  4. Step 4: Simplify right side
    3,831.65x = 11,383,256.67
  5. Step 5: Solve for x
    x = 11,383,256.67/3,831.65
  6. Step 6: Final answer
    x = 2,970.85

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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.