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Finding the Fourth Proportional to 8,757.56, 12,084.60 and 4,778.58

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Solution

The fourth proportional to 8,757.56, 12,084.60 and 4,778.58 is: 6,593.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,757.56 : 12,084.60 = 4,778.58 : x
  2. Step 2: Convert to fraction form
    8,757.56/12,084.60 = 4,778.58/x
  3. Step 3: Cross multiply
    8,757.56x = 12,084.60 × 4,778.58
  4. Step 4: Simplify right side
    8,757.56x = 57,747,227.87
  5. Step 5: Solve for x
    x = 57,747,227.87/8,757.56
  6. Step 6: Final answer
    x = 6,593.99

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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.