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Finding the Fourth Proportional to 7,709.38, 10,640.03 and 4,353.54

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Solution

The fourth proportional to 7,709.38, 10,640.03 and 4,353.54 is: 6,008.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.38 : 10,640.03 = 4,353.54 : x
  2. Step 2: Convert to fraction form
    7,709.38/10,640.03 = 4,353.54/x
  3. Step 3: Cross multiply
    7,709.38x = 10,640.03 × 4,353.54
  4. Step 4: Simplify right side
    7,709.38x = 46,321,796.21
  5. Step 5: Solve for x
    x = 46,321,796.21/7,709.38
  6. Step 6: Final answer
    x = 6,008.50

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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.