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Finding the Fourth Proportional to 8,347.05, 12,519.77 and 2,191.05

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Solution

The fourth proportional to 8,347.05, 12,519.77 and 2,191.05 is: 3,286.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.05 : 12,519.77 = 2,191.05 : x
  2. Step 2: Convert to fraction form
    8,347.05/12,519.77 = 2,191.05/x
  3. Step 3: Cross multiply
    8,347.05x = 12,519.77 × 2,191.05
  4. Step 4: Simplify right side
    8,347.05x = 27,431,431.10
  5. Step 5: Solve for x
    x = 27,431,431.10/8,347.05
  6. Step 6: Final answer
    x = 3,286.36

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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.