Home / 1,617-2,231.51-918.51

Finding the Fourth Proportional to 1,617, 2,231.51 and 918.51

Calculator

Solution

The fourth proportional to 1,617, 2,231.51 and 918.51 is: 1,267.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617 : 2,231.51 = 918.51 : x
  2. Step 2: Convert to fraction form
    1,617/2,231.51 = 918.51/x
  3. Step 3: Cross multiply
    1,617x = 2,231.51 × 918.51
  4. Step 4: Simplify right side
    1,617x = 2,049,659.66
  5. Step 5: Solve for x
    x = 2,049,659.66/1,617
  6. Step 6: Final answer
    x = 1,267.57

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.