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Finding the Fourth Proportional to 1,971.96, 2,958.30 and 673.56

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Solution

The fourth proportional to 1,971.96, 2,958.30 and 673.56 is: 1,010.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.96 : 2,958.30 = 673.56 : x
  2. Step 2: Convert to fraction form
    1,971.96/2,958.30 = 673.56/x
  3. Step 3: Cross multiply
    1,971.96x = 2,958.30 × 673.56
  4. Step 4: Simplify right side
    1,971.96x = 1,992,592.55
  5. Step 5: Solve for x
    x = 1,992,592.55/1,971.96
  6. Step 6: Final answer
    x = 1,010.46

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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.