Home / 7,148.36-10,718.20-3,198.88

Finding the Fourth Proportional to 7,148.36, 10,718.20 and 3,198.88

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Solution

The fourth proportional to 7,148.36, 10,718.20 and 3,198.88 is: 4,796.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.36 : 10,718.20 = 3,198.88 : x
  2. Step 2: Convert to fraction form
    7,148.36/10,718.20 = 3,198.88/x
  3. Step 3: Cross multiply
    7,148.36x = 10,718.20 × 3,198.88
  4. Step 4: Simplify right side
    7,148.36x = 34,286,235.62
  5. Step 5: Solve for x
    x = 34,286,235.62/7,148.36
  6. Step 6: Final answer
    x = 4,796.38

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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.