Home / 3,879.19-5,355.81-2,555.14

Finding the Fourth Proportional to 3,879.19, 5,355.81 and 2,555.14

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Solution

The fourth proportional to 3,879.19, 5,355.81 and 2,555.14 is: 3,527.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,879.19 : 5,355.81 = 2,555.14 : x
  2. Step 2: Convert to fraction form
    3,879.19/5,355.81 = 2,555.14/x
  3. Step 3: Cross multiply
    3,879.19x = 5,355.81 × 2,555.14
  4. Step 4: Simplify right side
    3,879.19x = 13,684,831.59
  5. Step 5: Solve for x
    x = 13,684,831.59/3,879.19
  6. Step 6: Final answer
    x = 3,527.76

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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.