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Finding the Fourth Proportional to 8,219.56, 12,321.12 and 2,953.14

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Solution

The fourth proportional to 8,219.56, 12,321.12 and 2,953.14 is: 4,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,219.56 : 12,321.12 = 2,953.14 : x
  2. Step 2: Convert to fraction form
    8,219.56/12,321.12 = 2,953.14/x
  3. Step 3: Cross multiply
    8,219.56x = 12,321.12 × 2,953.14
  4. Step 4: Simplify right side
    8,219.56x = 36,385,992.32
  5. Step 5: Solve for x
    x = 36,385,992.32/8,219.56
  6. Step 6: Final answer
    x = 4,426.76

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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.