Home / 1,249.36-1,724-725.42

Finding the Fourth Proportional to 1,249.36, 1,724 and 725.42

Calculator

Solution

The fourth proportional to 1,249.36, 1,724 and 725.42 is: 1,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.36 : 1,724 = 725.42 : x
  2. Step 2: Convert to fraction form
    1,249.36/1,724 = 725.42/x
  3. Step 3: Cross multiply
    1,249.36x = 1,724 × 725.42
  4. Step 4: Simplify right side
    1,249.36x = 1,250,624.08
  5. Step 5: Solve for x
    x = 1,250,624.08/1,249.36
  6. Step 6: Final answer
    x = 1,001.01

Related Problems

Find fourth proportional to 624.68, 862 and 362.71
Half scale
Find fourth proportional to 2,498.72, 3,448 and 1,450.84
Double scale
Find fourth proportional to 1,250.36, 1,725.38 and 726.42
Similar ratio
Find fourth proportional to 1,874.04, 2,586 and 1,088.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.