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Finding the Fourth Proportional to 8,235, 11,349.18 and 7,608.60

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Solution

The fourth proportional to 8,235, 11,349.18 and 7,608.60 is: 10,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,235 : 11,349.18 = 7,608.60 : x
  2. Step 2: Convert to fraction form
    8,235/11,349.18 = 7,608.60/x
  3. Step 3: Cross multiply
    8,235x = 11,349.18 × 7,608.60
  4. Step 4: Simplify right side
    8,235x = 86,351,370.95
  5. Step 5: Solve for x
    x = 86,351,370.95/8,235
  6. Step 6: Final answer
    x = 10,485.90

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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.