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Finding the Fourth Proportional to 4,917.78, 7,375.60 and 1,630.10

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Solution

The fourth proportional to 4,917.78, 7,375.60 and 1,630.10 is: 2,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.78 : 7,375.60 = 1,630.10 : x
  2. Step 2: Convert to fraction form
    4,917.78/7,375.60 = 1,630.10/x
  3. Step 3: Cross multiply
    4,917.78x = 7,375.60 × 1,630.10
  4. Step 4: Simplify right side
    4,917.78x = 12,022,965.56
  5. Step 5: Solve for x
    x = 12,022,965.56/4,917.78
  6. Step 6: Final answer
    x = 2,444.80

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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.