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Finding the Fourth Proportional to 6,680.69, 9,218.64 and 3,696.45

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Solution

The fourth proportional to 6,680.69, 9,218.64 and 3,696.45 is: 5,100.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,680.69 : 9,218.64 = 3,696.45 : x
  2. Step 2: Convert to fraction form
    6,680.69/9,218.64 = 3,696.45/x
  3. Step 3: Cross multiply
    6,680.69x = 9,218.64 × 3,696.45
  4. Step 4: Simplify right side
    6,680.69x = 34,076,241.83
  5. Step 5: Solve for x
    x = 34,076,241.83/6,680.69
  6. Step 6: Final answer
    x = 5,100.71

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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.