Home / 2,125-3,187.50-586

Finding the Fourth Proportional to 2,125, 3,187.50 and 586

Calculator

Solution

The fourth proportional to 2,125, 3,187.50 and 586 is: 879

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125 : 3,187.50 = 586 : x
  2. Step 2: Convert to fraction form
    2,125/3,187.50 = 586/x
  3. Step 3: Cross multiply
    2,125x = 3,187.50 × 586
  4. Step 4: Simplify right side
    2,125x = 1,867,875
  5. Step 5: Solve for x
    x = 1,867,875/2,125
  6. Step 6: Final answer
    x = 879

Related Problems

Find fourth proportional to 1,062.50, 1,593.75 and 293
Half scale
Find fourth proportional to 4,250, 6,375 and 1,172
Double scale
Find fourth proportional to 2,126, 3,189 and 587
Similar ratio
Find fourth proportional to 3,187.50, 4,781.25 and 879
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.