Home / 5,420.07-8,130.09-1,316.07

Finding the Fourth Proportional to 5,420.07, 8,130.09 and 1,316.07

Calculator

Solution

The fourth proportional to 5,420.07, 8,130.09 and 1,316.07 is: 1,974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.07 : 8,130.09 = 1,316.07 : x
  2. Step 2: Convert to fraction form
    5,420.07/8,130.09 = 1,316.07/x
  3. Step 3: Cross multiply
    5,420.07x = 8,130.09 × 1,316.07
  4. Step 4: Simplify right side
    5,420.07x = 10,699,767.55
  5. Step 5: Solve for x
    x = 10,699,767.55/5,420.07
  6. Step 6: Final answer
    x = 1,974.10

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.