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Finding the Fourth Proportional to 6,687.65, 9,228.79 and 3,662.75

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Solution

The fourth proportional to 6,687.65, 9,228.79 and 3,662.75 is: 5,054.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,687.65 : 9,228.79 = 3,662.75 : x
  2. Step 2: Convert to fraction form
    6,687.65/9,228.79 = 3,662.75/x
  3. Step 3: Cross multiply
    6,687.65x = 9,228.79 × 3,662.75
  4. Step 4: Simplify right side
    6,687.65x = 33,802,750.57
  5. Step 5: Solve for x
    x = 33,802,750.57/6,687.65
  6. Step 6: Final answer
    x = 5,054.50

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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.