Home / 2,624-3,936-800

Finding the Fourth Proportional to 2,624, 3,936 and 800

Calculator

Solution

The fourth proportional to 2,624, 3,936 and 800 is: 1,200

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,624 : 3,936 = 800 : x
  2. Step 2: Convert to fraction form
    2,624/3,936 = 800/x
  3. Step 3: Cross multiply
    2,624x = 3,936 × 800
  4. Step 4: Simplify right side
    2,624x = 3,148,800
  5. Step 5: Solve for x
    x = 3,148,800/2,624
  6. Step 6: Final answer
    x = 1,200

Related Problems

Find fourth proportional to 1,312, 1,968 and 400
Half scale
Find fourth proportional to 5,248, 7,872 and 1,600
Double scale
Find fourth proportional to 2,625, 3,937.50 and 801
Similar ratio
Find fourth proportional to 3,936, 5,904 and 1,200
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.