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Finding the Fourth Proportional to 3,976.03, 5,483.82 and 2,780.62

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Solution

The fourth proportional to 3,976.03, 5,483.82 and 2,780.62 is: 3,835.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,976.03 : 5,483.82 = 2,780.62 : x
  2. Step 2: Convert to fraction form
    3,976.03/5,483.82 = 2,780.62/x
  3. Step 3: Cross multiply
    3,976.03x = 5,483.82 × 2,780.62
  4. Step 4: Simplify right side
    3,976.03x = 15,248,378.25
  5. Step 5: Solve for x
    x = 15,248,378.25/3,976.03
  6. Step 6: Final answer
    x = 3,835.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.