Home / 6,388.82-8,816.42-3,556.20

Finding the Fourth Proportional to 6,388.82, 8,816.42 and 3,556.20

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Solution

The fourth proportional to 6,388.82, 8,816.42 and 3,556.20 is: 4,907.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,388.82 : 8,816.42 = 3,556.20 : x
  2. Step 2: Convert to fraction form
    6,388.82/8,816.42 = 3,556.20/x
  3. Step 3: Cross multiply
    6,388.82x = 8,816.42 × 3,556.20
  4. Step 4: Simplify right side
    6,388.82x = 31,352,952.80
  5. Step 5: Solve for x
    x = 31,352,952.80/6,388.82
  6. Step 6: Final answer
    x = 4,907.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.