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Finding the Fourth Proportional to 8,171.84, 12,257.02 and 3,240.20

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Solution

The fourth proportional to 8,171.84, 12,257.02 and 3,240.20 is: 4,860.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,171.84 : 12,257.02 = 3,240.20 : x
  2. Step 2: Convert to fraction form
    8,171.84/12,257.02 = 3,240.20/x
  3. Step 3: Cross multiply
    8,171.84x = 12,257.02 × 3,240.20
  4. Step 4: Simplify right side
    8,171.84x = 39,715,196.20
  5. Step 5: Solve for x
    x = 39,715,196.20/8,171.84
  6. Step 6: Final answer
    x = 4,860.01

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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.