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Finding the Fourth Proportional to 1,609.14, 2,412.45 and 683.94

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Solution

The fourth proportional to 1,609.14, 2,412.45 and 683.94 is: 1,025.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,609.14 : 2,412.45 = 683.94 : x
  2. Step 2: Convert to fraction form
    1,609.14/2,412.45 = 683.94/x
  3. Step 3: Cross multiply
    1,609.14x = 2,412.45 × 683.94
  4. Step 4: Simplify right side
    1,609.14x = 1,649,971.05
  5. Step 5: Solve for x
    x = 1,649,971.05/1,609.14
  6. Step 6: Final answer
    x = 1,025.37

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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.