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Finding the Fourth Proportional to 6,679.98, 9,998.28 and 3,555.54

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Solution

The fourth proportional to 6,679.98, 9,998.28 and 3,555.54 is: 5,321.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,679.98 : 9,998.28 = 3,555.54 : x
  2. Step 2: Convert to fraction form
    6,679.98/9,998.28 = 3,555.54/x
  3. Step 3: Cross multiply
    6,679.98x = 9,998.28 × 3,555.54
  4. Step 4: Simplify right side
    6,679.98x = 35,549,284.47
  5. Step 5: Solve for x
    x = 35,549,284.47/6,679.98
  6. Step 6: Final answer
    x = 5,321.77

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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.