Home / 3,880.39-5,354.78-2,112

Finding the Fourth Proportional to 3,880.39, 5,354.78 and 2,112

Calculator

Solution

The fourth proportional to 3,880.39, 5,354.78 and 2,112 is: 2,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.39 : 5,354.78 = 2,112 : x
  2. Step 2: Convert to fraction form
    3,880.39/5,354.78 = 2,112/x
  3. Step 3: Cross multiply
    3,880.39x = 5,354.78 × 2,112
  4. Step 4: Simplify right side
    3,880.39x = 11,309,300.64
  5. Step 5: Solve for x
    x = 11,309,300.64/3,880.39
  6. Step 6: Final answer
    x = 2,914.47

Related Problems

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.