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Finding the Fourth Proportional to 8,507.78, 12,759.84 and 2,663.62

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Solution

The fourth proportional to 8,507.78, 12,759.84 and 2,663.62 is: 3,994.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,507.78 : 12,759.84 = 2,663.62 : x
  2. Step 2: Convert to fraction form
    8,507.78/12,759.84 = 2,663.62/x
  3. Step 3: Cross multiply
    8,507.78x = 12,759.84 × 2,663.62
  4. Step 4: Simplify right side
    8,507.78x = 33,987,365.02
  5. Step 5: Solve for x
    x = 33,987,365.02/8,507.78
  6. Step 6: Final answer
    x = 3,994.86

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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.