Home / 6,619.75-9,135.50-3,966.64

Finding the Fourth Proportional to 6,619.75, 9,135.50 and 3,966.64

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Solution

The fourth proportional to 6,619.75, 9,135.50 and 3,966.64 is: 5,474.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,619.75 : 9,135.50 = 3,966.64 : x
  2. Step 2: Convert to fraction form
    6,619.75/9,135.50 = 3,966.64/x
  3. Step 3: Cross multiply
    6,619.75x = 9,135.50 × 3,966.64
  4. Step 4: Simplify right side
    6,619.75x = 36,237,231.31
  5. Step 5: Solve for x
    x = 36,237,231.31/6,619.75
  6. Step 6: Final answer
    x = 5,474.11

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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.