Home / 1,289.17-1,932.94-712.45

Finding the Fourth Proportional to 1,289.17, 1,932.94 and 712.45

Calculator

Solution

The fourth proportional to 1,289.17, 1,932.94 and 712.45 is: 1,068.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.17 : 1,932.94 = 712.45 : x
  2. Step 2: Convert to fraction form
    1,289.17/1,932.94 = 712.45/x
  3. Step 3: Cross multiply
    1,289.17x = 1,932.94 × 712.45
  4. Step 4: Simplify right side
    1,289.17x = 1,377,123.10
  5. Step 5: Solve for x
    x = 1,377,123.10/1,289.17
  6. Step 6: Final answer
    x = 1,068.22

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.