Home / 3,935.18-5,430.48-2,166.78

Finding the Fourth Proportional to 3,935.18, 5,430.48 and 2,166.78

Calculator

Solution

The fourth proportional to 3,935.18, 5,430.48 and 2,166.78 is: 2,990.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.18 : 5,430.48 = 2,166.78 : x
  2. Step 2: Convert to fraction form
    3,935.18/5,430.48 = 2,166.78/x
  3. Step 3: Cross multiply
    3,935.18x = 5,430.48 × 2,166.78
  4. Step 4: Simplify right side
    3,935.18x = 11,766,655.45
  5. Step 5: Solve for x
    x = 11,766,655.45/3,935.18
  6. Step 6: Final answer
    x = 2,990.12

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.