Home / 1,122.44-1,683.60-392.18

Finding the Fourth Proportional to 1,122.44, 1,683.60 and 392.18

Calculator

Solution

The fourth proportional to 1,122.44, 1,683.60 and 392.18 is: 588.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,122.44 : 1,683.60 = 392.18 : x
  2. Step 2: Convert to fraction form
    1,122.44/1,683.60 = 392.18/x
  3. Step 3: Cross multiply
    1,122.44x = 1,683.60 × 392.18
  4. Step 4: Simplify right side
    1,122.44x = 660,265.83
  5. Step 5: Solve for x
    x = 660,265.83/1,122.44
  6. Step 6: Final answer
    x = 588.24

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.