Home / 3,090-4,635-1,722

Finding the Fourth Proportional to 3,090, 4,635 and 1,722

Calculator

Solution

The fourth proportional to 3,090, 4,635 and 1,722 is: 2,583

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,090 : 4,635 = 1,722 : x
  2. Step 2: Convert to fraction form
    3,090/4,635 = 1,722/x
  3. Step 3: Cross multiply
    3,090x = 4,635 × 1,722
  4. Step 4: Simplify right side
    3,090x = 7,981,470
  5. Step 5: Solve for x
    x = 7,981,470/3,090
  6. Step 6: Final answer
    x = 2,583

Related Problems

Find fourth proportional to 1,545, 2,317.50 and 861
Half scale
Find fourth proportional to 6,180, 9,270 and 3,444
Double scale
Find fourth proportional to 3,091, 4,636.50 and 1,723
Similar ratio
Find fourth proportional to 4,635, 6,952.50 and 2,583
1.5x scale

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.