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Finding the Fourth Proportional to 8,156.84, 12,226.71 and 3,415.71

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Solution

The fourth proportional to 8,156.84, 12,226.71 and 3,415.71 is: 5,119.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.84 : 12,226.71 = 3,415.71 : x
  2. Step 2: Convert to fraction form
    8,156.84/12,226.71 = 3,415.71/x
  3. Step 3: Cross multiply
    8,156.84x = 12,226.71 × 3,415.71
  4. Step 4: Simplify right side
    8,156.84x = 41,762,919.89
  5. Step 5: Solve for x
    x = 41,762,919.89/8,156.84
  6. Step 6: Final answer
    x = 5,119.99

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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.