Home / 5,318.80-7,992.28-2,855.44

Finding the Fourth Proportional to 5,318.80, 7,992.28 and 2,855.44

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Solution

The fourth proportional to 5,318.80, 7,992.28 and 2,855.44 is: 4,290.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.80 : 7,992.28 = 2,855.44 : x
  2. Step 2: Convert to fraction form
    5,318.80/7,992.28 = 2,855.44/x
  3. Step 3: Cross multiply
    5,318.80x = 7,992.28 × 2,855.44
  4. Step 4: Simplify right side
    5,318.80x = 22,821,476.00
  5. Step 5: Solve for x
    x = 22,821,476.00/5,318.80
  6. Step 6: Final answer
    x = 4,290.72

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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.