Home / 2,410-3,615-871

Finding the Fourth Proportional to 2,410, 3,615 and 871

Calculator

Solution

The fourth proportional to 2,410, 3,615 and 871 is: 1,306.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,410 : 3,615 = 871 : x
  2. Step 2: Convert to fraction form
    2,410/3,615 = 871/x
  3. Step 3: Cross multiply
    2,410x = 3,615 × 871
  4. Step 4: Simplify right side
    2,410x = 3,148,665
  5. Step 5: Solve for x
    x = 3,148,665/2,410
  6. Step 6: Final answer
    x = 1,306.50

Related Problems

Find fourth proportional to 1,205, 1,807.50 and 435.50
Half scale
Find fourth proportional to 4,820, 7,230 and 1,742
Double scale
Find fourth proportional to 2,411, 3,616.50 and 872
Similar ratio
Find fourth proportional to 3,615, 5,422.50 and 1,306.50
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.