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Finding the Fourth Proportional to 3,980.85, 5,971.46 and 1,348.28

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Solution

The fourth proportional to 3,980.85, 5,971.46 and 1,348.28 is: 2,022.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.85 : 5,971.46 = 1,348.28 : x
  2. Step 2: Convert to fraction form
    3,980.85/5,971.46 = 1,348.28/x
  3. Step 3: Cross multiply
    3,980.85x = 5,971.46 × 1,348.28
  4. Step 4: Simplify right side
    3,980.85x = 8,051,193.35
  5. Step 5: Solve for x
    x = 8,051,193.35/3,980.85
  6. Step 6: Final answer
    x = 2,022.48

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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.