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Finding the Fourth Proportional to 5,181.60, 7,761.06 and 4,299.60

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Solution

The fourth proportional to 5,181.60, 7,761.06 and 4,299.60 is: 6,439.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.60 : 7,761.06 = 4,299.60 : x
  2. Step 2: Convert to fraction form
    5,181.60/7,761.06 = 4,299.60/x
  3. Step 3: Cross multiply
    5,181.60x = 7,761.06 × 4,299.60
  4. Step 4: Simplify right side
    5,181.60x = 33,369,453.58
  5. Step 5: Solve for x
    x = 33,369,453.58/5,181.60
  6. Step 6: Final answer
    x = 6,439.99

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1.5x scale

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.