Home / 1,309.32-1,806.84-785.16

Finding the Fourth Proportional to 1,309.32, 1,806.84 and 785.16

Calculator

Solution

The fourth proportional to 1,309.32, 1,806.84 and 785.16 is: 1,083.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,309.32 : 1,806.84 = 785.16 : x
  2. Step 2: Convert to fraction form
    1,309.32/1,806.84 = 785.16/x
  3. Step 3: Cross multiply
    1,309.32x = 1,806.84 × 785.16
  4. Step 4: Simplify right side
    1,309.32x = 1,418,658.49
  5. Step 5: Solve for x
    x = 1,418,658.49/1,309.32
  6. Step 6: Final answer
    x = 1,083.51

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.