Home / 7,769.90-11,653.20-2,505.39

Finding the Fourth Proportional to 7,769.90, 11,653.20 and 2,505.39

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Solution

The fourth proportional to 7,769.90, 11,653.20 and 2,505.39 is: 3,757.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.90 : 11,653.20 = 2,505.39 : x
  2. Step 2: Convert to fraction form
    7,769.90/11,653.20 = 2,505.39/x
  3. Step 3: Cross multiply
    7,769.90x = 11,653.20 × 2,505.39
  4. Step 4: Simplify right side
    7,769.90x = 29,195,810.75
  5. Step 5: Solve for x
    x = 29,195,810.75/7,769.90
  6. Step 6: Final answer
    x = 3,757.56

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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.