Home / 7,912.88-11,857-7,086.64

Finding the Fourth Proportional to 7,912.88, 11,857 and 7,086.64

Calculator

Solution

The fourth proportional to 7,912.88, 11,857 and 7,086.64 is: 10,618.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.88 : 11,857 = 7,086.64 : x
  2. Step 2: Convert to fraction form
    7,912.88/11,857 = 7,086.64/x
  3. Step 3: Cross multiply
    7,912.88x = 11,857 × 7,086.64
  4. Step 4: Simplify right side
    7,912.88x = 84,026,290.48
  5. Step 5: Solve for x
    x = 84,026,290.48/7,912.88
  6. Step 6: Final answer
    x = 10,618.93

Related Problems

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.