Home / 2,281.10-3,421.63-820.35

Finding the Fourth Proportional to 2,281.10, 3,421.63 and 820.35

Calculator

Solution

The fourth proportional to 2,281.10, 3,421.63 and 820.35 is: 1,230.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.10 : 3,421.63 = 820.35 : x
  2. Step 2: Convert to fraction form
    2,281.10/3,421.63 = 820.35/x
  3. Step 3: Cross multiply
    2,281.10x = 3,421.63 × 820.35
  4. Step 4: Simplify right side
    2,281.10x = 2,806,934.17
  5. Step 5: Solve for x
    x = 2,806,934.17/2,281.10
  6. Step 6: Final answer
    x = 1,230.52

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.