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Finding the Fourth Proportional to 4,879.35, 6,734.61 and 3,815.01

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Solution

The fourth proportional to 4,879.35, 6,734.61 and 3,815.01 is: 5,265.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.35 : 6,734.61 = 3,815.01 : x
  2. Step 2: Convert to fraction form
    4,879.35/6,734.61 = 3,815.01/x
  3. Step 3: Cross multiply
    4,879.35x = 6,734.61 × 3,815.01
  4. Step 4: Simplify right side
    4,879.35x = 25,692,604.50
  5. Step 5: Solve for x
    x = 25,692,604.50/4,879.35
  6. Step 6: Final answer
    x = 5,265.58

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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.