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Finding the Fourth Proportional to 3,378.08, 5,068.20 and 1,838

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Solution

The fourth proportional to 3,378.08, 5,068.20 and 1,838 is: 2,757.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.08 : 5,068.20 = 1,838 : x
  2. Step 2: Convert to fraction form
    3,378.08/5,068.20 = 1,838/x
  3. Step 3: Cross multiply
    3,378.08x = 5,068.20 × 1,838
  4. Step 4: Simplify right side
    3,378.08x = 9,315,351.60
  5. Step 5: Solve for x
    x = 9,315,351.60/3,378.08
  6. Step 6: Final answer
    x = 2,757.59

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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.