Home / 1,428.72-1,971.56-799.34

Finding the Fourth Proportional to 1,428.72, 1,971.56 and 799.34

Calculator

Solution

The fourth proportional to 1,428.72, 1,971.56 and 799.34 is: 1,103.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428.72 : 1,971.56 = 799.34 : x
  2. Step 2: Convert to fraction form
    1,428.72/1,971.56 = 799.34/x
  3. Step 3: Cross multiply
    1,428.72x = 1,971.56 × 799.34
  4. Step 4: Simplify right side
    1,428.72x = 1,575,946.77
  5. Step 5: Solve for x
    x = 1,575,946.77/1,428.72
  6. Step 6: Final answer
    x = 1,103.05

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.