Home / 926.80-1,279.92-762.64

Finding the Fourth Proportional to 926.80, 1,279.92 and 762.64

Calculator

Solution

The fourth proportional to 926.80, 1,279.92 and 762.64 is: 1,053.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    926.80 : 1,279.92 = 762.64 : x
  2. Step 2: Convert to fraction form
    926.80/1,279.92 = 762.64/x
  3. Step 3: Cross multiply
    926.80x = 1,279.92 × 762.64
  4. Step 4: Simplify right side
    926.80x = 976,118.19
  5. Step 5: Solve for x
    x = 976,118.19/926.80
  6. Step 6: Final answer
    x = 1,053.21

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.