Home / 1,291.29-1,936.94-521.25

Finding the Fourth Proportional to 1,291.29, 1,936.94 and 521.25

Calculator

Solution

The fourth proportional to 1,291.29, 1,936.94 and 521.25 is: 781.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291.29 : 1,936.94 = 521.25 : x
  2. Step 2: Convert to fraction form
    1,291.29/1,936.94 = 521.25/x
  3. Step 3: Cross multiply
    1,291.29x = 1,936.94 × 521.25
  4. Step 4: Simplify right side
    1,291.29x = 1,009,627.37
  5. Step 5: Solve for x
    x = 1,009,627.37/1,291.29
  6. Step 6: Final answer
    x = 781.88

Related Problems

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.