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Finding the Fourth Proportional to 3,379.80, 5,061.46 and 1,914.51

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Solution

The fourth proportional to 3,379.80, 5,061.46 and 1,914.51 is: 2,867.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379.80 : 5,061.46 = 1,914.51 : x
  2. Step 2: Convert to fraction form
    3,379.80/5,061.46 = 1,914.51/x
  3. Step 3: Cross multiply
    3,379.80x = 5,061.46 × 1,914.51
  4. Step 4: Simplify right side
    3,379.80x = 9,690,215.78
  5. Step 5: Solve for x
    x = 9,690,215.78/3,379.80
  6. Step 6: Final answer
    x = 2,867.10

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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.