Home / 7,135.56-9,847-3,991.74

Finding the Fourth Proportional to 7,135.56, 9,847 and 3,991.74

Calculator

Solution

The fourth proportional to 7,135.56, 9,847 and 3,991.74 is: 5,508.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.56 : 9,847 = 3,991.74 : x
  2. Step 2: Convert to fraction form
    7,135.56/9,847 = 3,991.74/x
  3. Step 3: Cross multiply
    7,135.56x = 9,847 × 3,991.74
  4. Step 4: Simplify right side
    7,135.56x = 39,306,663.78
  5. Step 5: Solve for x
    x = 39,306,663.78/7,135.56
  6. Step 6: Final answer
    x = 5,508.56

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.