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Finding the Fourth Proportional to 3,609.69, 5,409.81 and 1,757.22

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Solution

The fourth proportional to 3,609.69, 5,409.81 and 1,757.22 is: 2,633.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.69 : 5,409.81 = 1,757.22 : x
  2. Step 2: Convert to fraction form
    3,609.69/5,409.81 = 1,757.22/x
  3. Step 3: Cross multiply
    3,609.69x = 5,409.81 × 1,757.22
  4. Step 4: Simplify right side
    3,609.69x = 9,506,226.33
  5. Step 5: Solve for x
    x = 9,506,226.33/3,609.69
  6. Step 6: Final answer
    x = 2,633.53

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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.