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Finding the Fourth Proportional to 1,972.09, 2,958.13 and 673.57

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Solution

The fourth proportional to 1,972.09, 2,958.13 and 673.57 is: 1,010.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.09 : 2,958.13 = 673.57 : x
  2. Step 2: Convert to fraction form
    1,972.09/2,958.13 = 673.57/x
  3. Step 3: Cross multiply
    1,972.09x = 2,958.13 × 673.57
  4. Step 4: Simplify right side
    1,972.09x = 1,992,492.83
  5. Step 5: Solve for x
    x = 1,992,492.83/1,972.09
  6. Step 6: Final answer
    x = 1,010.35

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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.