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Finding the Fourth Proportional to 8,286.78, 11,435.76 and 4,560.78

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Solution

The fourth proportional to 8,286.78, 11,435.76 and 4,560.78 is: 6,293.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.78 : 11,435.76 = 4,560.78 : x
  2. Step 2: Convert to fraction form
    8,286.78/11,435.76 = 4,560.78/x
  3. Step 3: Cross multiply
    8,286.78x = 11,435.76 × 4,560.78
  4. Step 4: Simplify right side
    8,286.78x = 52,155,985.49
  5. Step 5: Solve for x
    x = 52,155,985.49/8,286.78
  6. Step 6: Final answer
    x = 6,293.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.