Home / 1,172.12-1,617.48-648.14

Finding the Fourth Proportional to 1,172.12, 1,617.48 and 648.14

Calculator

Solution

The fourth proportional to 1,172.12, 1,617.48 and 648.14 is: 894.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,172.12 : 1,617.48 = 648.14 : x
  2. Step 2: Convert to fraction form
    1,172.12/1,617.48 = 648.14/x
  3. Step 3: Cross multiply
    1,172.12x = 1,617.48 × 648.14
  4. Step 4: Simplify right side
    1,172.12x = 1,048,353.49
  5. Step 5: Solve for x
    x = 1,048,353.49/1,172.12
  6. Step 6: Final answer
    x = 894.41

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.