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Finding the Fourth Proportional to 8,199.79, 12,299.58 and 2,653.00

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Solution

The fourth proportional to 8,199.79, 12,299.58 and 2,653.00 is: 3,979.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,199.79 : 12,299.58 = 2,653.00 : x
  2. Step 2: Convert to fraction form
    8,199.79/12,299.58 = 2,653.00/x
  3. Step 3: Cross multiply
    8,199.79x = 12,299.58 × 2,653.00
  4. Step 4: Simplify right side
    8,199.79x = 32,630,754.99
  5. Step 5: Solve for x
    x = 32,630,754.99/8,199.79
  6. Step 6: Final answer
    x = 3,979.46

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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.