Home / 2,620.17-3,932.51-1,388.45

Finding the Fourth Proportional to 2,620.17, 3,932.51 and 1,388.45

Calculator

Solution

The fourth proportional to 2,620.17, 3,932.51 and 1,388.45 is: 2,083.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.17 : 3,932.51 = 1,388.45 : x
  2. Step 2: Convert to fraction form
    2,620.17/3,932.51 = 1,388.45/x
  3. Step 3: Cross multiply
    2,620.17x = 3,932.51 × 1,388.45
  4. Step 4: Simplify right side
    2,620.17x = 5,460,066.90
  5. Step 5: Solve for x
    x = 5,460,066.90/2,620.17
  6. Step 6: Final answer
    x = 2,083.86

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.