Home / 7,286.80-10,926.36-3,178

Finding the Fourth Proportional to 7,286.80, 10,926.36 and 3,178

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Solution

The fourth proportional to 7,286.80, 10,926.36 and 3,178 is: 4,765.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,286.80 : 10,926.36 = 3,178 : x
  2. Step 2: Convert to fraction form
    7,286.80/10,926.36 = 3,178/x
  3. Step 3: Cross multiply
    7,286.80x = 10,926.36 × 3,178
  4. Step 4: Simplify right side
    7,286.80x = 34,723,972.08
  5. Step 5: Solve for x
    x = 34,723,972.08/7,286.80
  6. Step 6: Final answer
    x = 4,765.33

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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.