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Finding the Fourth Proportional to 2,673.79, 4,009.23 and 1,212.14

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Solution

The fourth proportional to 2,673.79, 4,009.23 and 1,212.14 is: 1,817.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,673.79 : 4,009.23 = 1,212.14 : x
  2. Step 2: Convert to fraction form
    2,673.79/4,009.23 = 1,212.14/x
  3. Step 3: Cross multiply
    2,673.79x = 4,009.23 × 1,212.14
  4. Step 4: Simplify right side
    2,673.79x = 4,859,762.62
  5. Step 5: Solve for x
    x = 4,859,762.62/2,673.79
  6. Step 6: Final answer
    x = 1,817.56

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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.