Home / 1,661.96-2,492.56-688.36

Finding the Fourth Proportional to 1,661.96, 2,492.56 and 688.36

Calculator

Solution

The fourth proportional to 1,661.96, 2,492.56 and 688.36 is: 1,032.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.96 : 2,492.56 = 688.36 : x
  2. Step 2: Convert to fraction form
    1,661.96/2,492.56 = 688.36/x
  3. Step 3: Cross multiply
    1,661.96x = 2,492.56 × 688.36
  4. Step 4: Simplify right side
    1,661.96x = 1,715,778.60
  5. Step 5: Solve for x
    x = 1,715,778.60/1,661.96
  6. Step 6: Final answer
    x = 1,032.38

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.