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Finding the Fourth Proportional to 8,507.68, 12,762.60 and 2,961.44

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Solution

The fourth proportional to 8,507.68, 12,762.60 and 2,961.44 is: 4,442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.68 : 12,762.60 = 2,961.44 : x
  2. Step 2: Convert to fraction form
    8,507.68/12,762.60 = 2,961.44/x
  3. Step 3: Cross multiply
    8,507.68x = 12,762.60 × 2,961.44
  4. Step 4: Simplify right side
    8,507.68x = 37,795,674.14
  5. Step 5: Solve for x
    x = 37,795,674.14/8,507.68
  6. Step 6: Final answer
    x = 4,442.54

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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.