Home / 1,508.82-2,264-687

Finding the Fourth Proportional to 1,508.82, 2,264 and 687

Calculator

Solution

The fourth proportional to 1,508.82, 2,264 and 687 is: 1,030.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,508.82 : 2,264 = 687 : x
  2. Step 2: Convert to fraction form
    1,508.82/2,264 = 687/x
  3. Step 3: Cross multiply
    1,508.82x = 2,264 × 687
  4. Step 4: Simplify right side
    1,508.82x = 1,555,368
  5. Step 5: Solve for x
    x = 1,555,368/1,508.82
  6. Step 6: Final answer
    x = 1,030.85

Related Problems

Find fourth proportional to 754.41, 1,132 and 343.50
Half scale
Find fourth proportional to 3,017.64, 4,528 and 1,374
Double scale
Find fourth proportional to 1,509.82, 2,265.50 and 688
Similar ratio
Find fourth proportional to 2,263.23, 3,396 and 1,030.50
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.