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Finding the Fourth Proportional to 8,579.04, 12,861.69 and 5,635.80

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Solution

The fourth proportional to 8,579.04, 12,861.69 and 5,635.80 is: 8,449.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.04 : 12,861.69 = 5,635.80 : x
  2. Step 2: Convert to fraction form
    8,579.04/12,861.69 = 5,635.80/x
  3. Step 3: Cross multiply
    8,579.04x = 12,861.69 × 5,635.80
  4. Step 4: Simplify right side
    8,579.04x = 72,485,912.50
  5. Step 5: Solve for x
    x = 72,485,912.50/8,579.04
  6. Step 6: Final answer
    x = 8,449.19

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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.