Home / 1,277.91-1,916.87-456.21

Finding the Fourth Proportional to 1,277.91, 1,916.87 and 456.21

Calculator

Solution

The fourth proportional to 1,277.91, 1,916.87 and 456.21 is: 684.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277.91 : 1,916.87 = 456.21 : x
  2. Step 2: Convert to fraction form
    1,277.91/1,916.87 = 456.21/x
  3. Step 3: Cross multiply
    1,277.91x = 1,916.87 × 456.21
  4. Step 4: Simplify right side
    1,277.91x = 874,495.26
  5. Step 5: Solve for x
    x = 874,495.26/1,277.91
  6. Step 6: Final answer
    x = 684.32

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.