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Finding the Fourth Proportional to 6,640.67, 9,167.42 and 4,661.73

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Solution

The fourth proportional to 6,640.67, 9,167.42 and 4,661.73 is: 6,435.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.67 : 9,167.42 = 4,661.73 : x
  2. Step 2: Convert to fraction form
    6,640.67/9,167.42 = 4,661.73/x
  3. Step 3: Cross multiply
    6,640.67x = 9,167.42 × 4,661.73
  4. Step 4: Simplify right side
    6,640.67x = 42,736,036.84
  5. Step 5: Solve for x
    x = 42,736,036.84/6,640.67
  6. Step 6: Final answer
    x = 6,435.50

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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.