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Finding the Fourth Proportional to 7,669.80, 11,496.60 and 4,375.80

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Solution

The fourth proportional to 7,669.80, 11,496.60 and 4,375.80 is: 6,559.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,669.80 : 11,496.60 = 4,375.80 : x
  2. Step 2: Convert to fraction form
    7,669.80/11,496.60 = 4,375.80/x
  3. Step 3: Cross multiply
    7,669.80x = 11,496.60 × 4,375.80
  4. Step 4: Simplify right side
    7,669.80x = 50,306,822.28
  5. Step 5: Solve for x
    x = 50,306,822.28/7,669.80
  6. Step 6: Final answer
    x = 6,559.08

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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.