Home / 1,489.40-2,055.37-826.30

Finding the Fourth Proportional to 1,489.40, 2,055.37 and 826.30

Calculator

Solution

The fourth proportional to 1,489.40, 2,055.37 and 826.30 is: 1,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.40 : 2,055.37 = 826.30 : x
  2. Step 2: Convert to fraction form
    1,489.40/2,055.37 = 826.30/x
  3. Step 3: Cross multiply
    1,489.40x = 2,055.37 × 826.30
  4. Step 4: Simplify right side
    1,489.40x = 1,698,352.23
  5. Step 5: Solve for x
    x = 1,698,352.23/1,489.40
  6. Step 6: Final answer
    x = 1,140.29

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.