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Finding the Fourth Proportional to 5,079.60, 7,608.60 and 3,135.60

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Solution

The fourth proportional to 5,079.60, 7,608.60 and 3,135.60 is: 4,696.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.60 : 7,608.60 = 3,135.60 : x
  2. Step 2: Convert to fraction form
    5,079.60/7,608.60 = 3,135.60/x
  3. Step 3: Cross multiply
    5,079.60x = 7,608.60 × 3,135.60
  4. Step 4: Simplify right side
    5,079.60x = 23,857,526.16
  5. Step 5: Solve for x
    x = 23,857,526.16/5,079.60
  6. Step 6: Final answer
    x = 4,696.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.