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Finding the Fourth Proportional to 6,716.49, 9,268.74 and 3,921.99

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Solution

The fourth proportional to 6,716.49, 9,268.74 and 3,921.99 is: 5,412.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,716.49 : 9,268.74 = 3,921.99 : x
  2. Step 2: Convert to fraction form
    6,716.49/9,268.74 = 3,921.99/x
  3. Step 3: Cross multiply
    6,716.49x = 9,268.74 × 3,921.99
  4. Step 4: Simplify right side
    6,716.49x = 36,351,905.59
  5. Step 5: Solve for x
    x = 36,351,905.59/6,716.49
  6. Step 6: Final answer
    x = 5,412.34

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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.