Home / 3,924.78-5,416.09-2,156.39

Finding the Fourth Proportional to 3,924.78, 5,416.09 and 2,156.39

Calculator

Solution

The fourth proportional to 3,924.78, 5,416.09 and 2,156.39 is: 2,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,924.78 : 5,416.09 = 2,156.39 : x
  2. Step 2: Convert to fraction form
    3,924.78/5,416.09 = 2,156.39/x
  3. Step 3: Cross multiply
    3,924.78x = 5,416.09 × 2,156.39
  4. Step 4: Simplify right side
    3,924.78x = 11,679,169.84
  5. Step 5: Solve for x
    x = 11,679,169.84/3,924.78
  6. Step 6: Final answer
    x = 2,975.75

Related Problems

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.