Home / 2,143.86-3,215.40-758.22

Finding the Fourth Proportional to 2,143.86, 3,215.40 and 758.22

Calculator

Solution

The fourth proportional to 2,143.86, 3,215.40 and 758.22 is: 1,137.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.86 : 3,215.40 = 758.22 : x
  2. Step 2: Convert to fraction form
    2,143.86/3,215.40 = 758.22/x
  3. Step 3: Cross multiply
    2,143.86x = 3,215.40 × 758.22
  4. Step 4: Simplify right side
    2,143.86x = 2,437,980.59
  5. Step 5: Solve for x
    x = 2,437,980.59/2,143.86
  6. Step 6: Final answer
    x = 1,137.19

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.