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Finding the Fourth Proportional to 8,500.86, 12,759.05 and 4,343.75

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Solution

The fourth proportional to 8,500.86, 12,759.05 and 4,343.75 is: 6,519.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,500.86 : 12,759.05 = 4,343.75 : x
  2. Step 2: Convert to fraction form
    8,500.86/12,759.05 = 4,343.75/x
  3. Step 3: Cross multiply
    8,500.86x = 12,759.05 × 4,343.75
  4. Step 4: Simplify right side
    8,500.86x = 55,422,037.92
  5. Step 5: Solve for x
    x = 55,422,037.92/8,500.86
  6. Step 6: Final answer
    x = 6,519.58

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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.