Home / 7,769.67-11,660.31-4,478.37

Finding the Fourth Proportional to 7,769.67, 11,660.31 and 4,478.37

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Solution

The fourth proportional to 7,769.67, 11,660.31 and 4,478.37 is: 6,720.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.67 : 11,660.31 = 4,478.37 : x
  2. Step 2: Convert to fraction form
    7,769.67/11,660.31 = 4,478.37/x
  3. Step 3: Cross multiply
    7,769.67x = 11,660.31 × 4,478.37
  4. Step 4: Simplify right side
    7,769.67x = 52,219,182.49
  5. Step 5: Solve for x
    x = 52,219,182.49/7,769.67
  6. Step 6: Final answer
    x = 6,720.90

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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.