Home / 1,421.73-2,132.82-447.75

Finding the Fourth Proportional to 1,421.73, 2,132.82 and 447.75

Calculator

Solution

The fourth proportional to 1,421.73, 2,132.82 and 447.75 is: 671.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.73 : 2,132.82 = 447.75 : x
  2. Step 2: Convert to fraction form
    1,421.73/2,132.82 = 447.75/x
  3. Step 3: Cross multiply
    1,421.73x = 2,132.82 × 447.75
  4. Step 4: Simplify right side
    1,421.73x = 954,970.16
  5. Step 5: Solve for x
    x = 954,970.16/1,421.73
  6. Step 6: Final answer
    x = 671.70

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.