Home / 2,140.14-3,210.21-679.44

Finding the Fourth Proportional to 2,140.14, 3,210.21 and 679.44

Calculator

Solution

The fourth proportional to 2,140.14, 3,210.21 and 679.44 is: 1,019.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.14 : 3,210.21 = 679.44 : x
  2. Step 2: Convert to fraction form
    2,140.14/3,210.21 = 679.44/x
  3. Step 3: Cross multiply
    2,140.14x = 3,210.21 × 679.44
  4. Step 4: Simplify right side
    2,140.14x = 2,181,145.08
  5. Step 5: Solve for x
    x = 2,181,145.08/2,140.14
  6. Step 6: Final answer
    x = 1,019.16

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.