Home / 7,121.46-10,684.35-3,422.64

Finding the Fourth Proportional to 7,121.46, 10,684.35 and 3,422.64

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Solution

The fourth proportional to 7,121.46, 10,684.35 and 3,422.64 is: 5,135.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121.46 : 10,684.35 = 3,422.64 : x
  2. Step 2: Convert to fraction form
    7,121.46/10,684.35 = 3,422.64/x
  3. Step 3: Cross multiply
    7,121.46x = 10,684.35 × 3,422.64
  4. Step 4: Simplify right side
    7,121.46x = 36,568,683.68
  5. Step 5: Solve for x
    x = 36,568,683.68/7,121.46
  6. Step 6: Final answer
    x = 5,135.00

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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.