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Finding the Fourth Proportional to 6,640.54, 9,164.12 and 3,656.09

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Solution

The fourth proportional to 6,640.54, 9,164.12 and 3,656.09 is: 5,045.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.54 : 9,164.12 = 3,656.09 : x
  2. Step 2: Convert to fraction form
    6,640.54/9,164.12 = 3,656.09/x
  3. Step 3: Cross multiply
    6,640.54x = 9,164.12 × 3,656.09
  4. Step 4: Simplify right side
    6,640.54x = 33,504,852.12
  5. Step 5: Solve for x
    x = 33,504,852.12/6,640.54
  6. Step 6: Final answer
    x = 5,045.50

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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.