Home / 1,305.51-1,958.73-575

Finding the Fourth Proportional to 1,305.51, 1,958.73 and 575

Calculator

Solution

The fourth proportional to 1,305.51, 1,958.73 and 575 is: 862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305.51 : 1,958.73 = 575 : x
  2. Step 2: Convert to fraction form
    1,305.51/1,958.73 = 575/x
  3. Step 3: Cross multiply
    1,305.51x = 1,958.73 × 575
  4. Step 4: Simplify right side
    1,305.51x = 1,126,269.75
  5. Step 5: Solve for x
    x = 1,126,269.75/1,305.51
  6. Step 6: Final answer
    x = 862.70

Related Problems

Find fourth proportional to 652.76, 979.37 and 287.50
Half scale
Find fourth proportional to 2,611.02, 3,917.46 and 1,150
Double scale
Find fourth proportional to 1,306.51, 1,960.23 and 576
Similar ratio
Find fourth proportional to 1,958.27, 2,938.10 and 862.50
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.