Home / 2,765.48-3,814.61-1,645.65

Finding the Fourth Proportional to 2,765.48, 3,814.61 and 1,645.65

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Solution

The fourth proportional to 2,765.48, 3,814.61 and 1,645.65 is: 2,269.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.48 : 3,814.61 = 1,645.65 : x
  2. Step 2: Convert to fraction form
    2,765.48/3,814.61 = 1,645.65/x
  3. Step 3: Cross multiply
    2,765.48x = 3,814.61 × 1,645.65
  4. Step 4: Simplify right side
    2,765.48x = 6,277,504.72
  5. Step 5: Solve for x
    x = 6,277,504.72/2,765.48
  6. Step 6: Final answer
    x = 2,269.96

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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.