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Finding the Fourth Proportional to 8,503.58, 12,757.18 and 2,660.64

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Solution

The fourth proportional to 8,503.58, 12,757.18 and 2,660.64 is: 3,991.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,503.58 : 12,757.18 = 2,660.64 : x
  2. Step 2: Convert to fraction form
    8,503.58/12,757.18 = 2,660.64/x
  3. Step 3: Cross multiply
    8,503.58x = 12,757.18 × 2,660.64
  4. Step 4: Simplify right side
    8,503.58x = 33,942,263.40
  5. Step 5: Solve for x
    x = 33,942,263.40/8,503.58
  6. Step 6: Final answer
    x = 3,991.53

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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.