Home / 1,820-2,730-604

Finding the Fourth Proportional to 1,820, 2,730 and 604

Calculator

Solution

The fourth proportional to 1,820, 2,730 and 604 is: 906

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,820 : 2,730 = 604 : x
  2. Step 2: Convert to fraction form
    1,820/2,730 = 604/x
  3. Step 3: Cross multiply
    1,820x = 2,730 × 604
  4. Step 4: Simplify right side
    1,820x = 1,648,920
  5. Step 5: Solve for x
    x = 1,648,920/1,820
  6. Step 6: Final answer
    x = 906

Related Problems

Find fourth proportional to 910, 1,365 and 302
Half scale
Find fourth proportional to 3,640, 5,460 and 1,208
Double scale
Find fourth proportional to 1,821, 2,731.50 and 605
Similar ratio
Find fourth proportional to 2,730, 4,095 and 906
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.