Home / 3,831.18-5,744.85-1,981.76

Finding the Fourth Proportional to 3,831.18, 5,744.85 and 1,981.76

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Solution

The fourth proportional to 3,831.18, 5,744.85 and 1,981.76 is: 2,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,831.18 : 5,744.85 = 1,981.76 : x
  2. Step 2: Convert to fraction form
    3,831.18/5,744.85 = 1,981.76/x
  3. Step 3: Cross multiply
    3,831.18x = 5,744.85 × 1,981.76
  4. Step 4: Simplify right side
    3,831.18x = 11,384,885.21
  5. Step 5: Solve for x
    x = 11,384,885.21/3,831.18
  6. Step 6: Final answer
    x = 2,971.64

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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.