Home / 8,390-12,576.72-4,694

Finding the Fourth Proportional to 8,390, 12,576.72 and 4,694

Calculator

Solution

The fourth proportional to 8,390, 12,576.72 and 4,694 is: 7,036.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,390 : 12,576.72 = 4,694 : x
  2. Step 2: Convert to fraction form
    8,390/12,576.72 = 4,694/x
  3. Step 3: Cross multiply
    8,390x = 12,576.72 × 4,694
  4. Step 4: Simplify right side
    8,390x = 59,035,123.68
  5. Step 5: Solve for x
    x = 59,035,123.68/8,390
  6. Step 6: Final answer
    x = 7,036.37

Related Problems

Find fourth proportional to 4,195, 6,288.36 and 2,347
Half scale
Find fourth proportional to 16,780, 25,153.44 and 9,388
Double scale
Find fourth proportional to 8,391, 12,578.22 and 4,695
Similar ratio
Find fourth proportional to 12,585, 18,865.08 and 7,041
1.5x scale

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.