Home / 9,866.95-13,616.44-5,390.78

Finding the Fourth Proportional to 9,866.95, 13,616.44 and 5,390.78

Calculator

Solution

The fourth proportional to 9,866.95, 13,616.44 and 5,390.78 is: 7,439.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,866.95 : 13,616.44 = 5,390.78 : x
  2. Step 2: Convert to fraction form
    9,866.95/13,616.44 = 5,390.78/x
  3. Step 3: Cross multiply
    9,866.95x = 13,616.44 × 5,390.78
  4. Step 4: Simplify right side
    9,866.95x = 73,403,189.16
  5. Step 5: Solve for x
    x = 73,403,189.16/9,866.95
  6. Step 6: Final answer
    x = 7,439.30

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.