Home / 1,909-2,863.50-541

Finding the Fourth Proportional to 1,909, 2,863.50 and 541

Calculator

Solution

The fourth proportional to 1,909, 2,863.50 and 541 is: 811.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909 : 2,863.50 = 541 : x
  2. Step 2: Convert to fraction form
    1,909/2,863.50 = 541/x
  3. Step 3: Cross multiply
    1,909x = 2,863.50 × 541
  4. Step 4: Simplify right side
    1,909x = 1,549,153.50
  5. Step 5: Solve for x
    x = 1,549,153.50/1,909
  6. Step 6: Final answer
    x = 811.50

Related Problems

Find fourth proportional to 954.50, 1,431.75 and 270.50
Half scale
Find fourth proportional to 3,818, 5,727 and 1,082
Double scale
Find fourth proportional to 1,910, 2,865 and 542
Similar ratio
Find fourth proportional to 2,863.50, 4,295.25 and 811.50
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.