Home / 1,012.14-1,392.58-790.71

Finding the Fourth Proportional to 1,012.14, 1,392.58 and 790.71

Calculator

Solution

The fourth proportional to 1,012.14, 1,392.58 and 790.71 is: 1,087.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,012.14 : 1,392.58 = 790.71 : x
  2. Step 2: Convert to fraction form
    1,012.14/1,392.58 = 790.71/x
  3. Step 3: Cross multiply
    1,012.14x = 1,392.58 × 790.71
  4. Step 4: Simplify right side
    1,012.14x = 1,101,126.93
  5. Step 5: Solve for x
    x = 1,101,126.93/1,012.14
  6. Step 6: Final answer
    x = 1,087.92

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.