Home / 1,398.18-2,095.50-575.49

Finding the Fourth Proportional to 1,398.18, 2,095.50 and 575.49

Calculator

Solution

The fourth proportional to 1,398.18, 2,095.50 and 575.49 is: 862.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.18 : 2,095.50 = 575.49 : x
  2. Step 2: Convert to fraction form
    1,398.18/2,095.50 = 575.49/x
  3. Step 3: Cross multiply
    1,398.18x = 2,095.50 × 575.49
  4. Step 4: Simplify right side
    1,398.18x = 1,205,939.30
  5. Step 5: Solve for x
    x = 1,205,939.30/1,398.18
  6. Step 6: Final answer
    x = 862.51

Related Problems

Find fourth proportional to 699.09, 1,047.75 and 287.75
Half scale
Find fourth proportional to 2,796.36, 4,191 and 1,150.98
Double scale
Find fourth proportional to 1,399.18, 2,097 and 576.49
Similar ratio
Find fourth proportional to 2,097.27, 3,143.25 and 863.24
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.