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Finding the Fourth Proportional to 4,620.76, 6,918.72 and 3,519.88

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Solution

The fourth proportional to 4,620.76, 6,918.72 and 3,519.88 is: 5,270.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,620.76 : 6,918.72 = 3,519.88 : x
  2. Step 2: Convert to fraction form
    4,620.76/6,918.72 = 3,519.88/x
  3. Step 3: Cross multiply
    4,620.76x = 6,918.72 × 3,519.88
  4. Step 4: Simplify right side
    4,620.76x = 24,353,064.15
  5. Step 5: Solve for x
    x = 24,353,064.15/4,620.76
  6. Step 6: Final answer
    x = 5,270.36

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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.