Home / 1,409.19-2,112-998.41

Finding the Fourth Proportional to 1,409.19, 2,112 and 998.41

Calculator

Solution

The fourth proportional to 1,409.19, 2,112 and 998.41 is: 1,496.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.19 : 2,112 = 998.41 : x
  2. Step 2: Convert to fraction form
    1,409.19/2,112 = 998.41/x
  3. Step 3: Cross multiply
    1,409.19x = 2,112 × 998.41
  4. Step 4: Simplify right side
    1,409.19x = 2,108,641.92
  5. Step 5: Solve for x
    x = 2,108,641.92/1,409.19
  6. Step 6: Final answer
    x = 1,496.35

Related Problems

Find fourth proportional to 704.60, 1,056 and 499.21
Half scale
Find fourth proportional to 2,818.38, 4,224 and 1,996.82
Double scale
Find fourth proportional to 1,410.19, 2,113.50 and 999.41
Similar ratio
Find fourth proportional to 2,113.79, 3,168 and 1,497.62
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.