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Finding the Fourth Proportional to 8,472.50, 12,716.85 and 3,540.83

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Solution

The fourth proportional to 8,472.50, 12,716.85 and 3,540.83 is: 5,314.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,472.50 : 12,716.85 = 3,540.83 : x
  2. Step 2: Convert to fraction form
    8,472.50/12,716.85 = 3,540.83/x
  3. Step 3: Cross multiply
    8,472.50x = 12,716.85 × 3,540.83
  4. Step 4: Simplify right side
    8,472.50x = 45,028,203.99
  5. Step 5: Solve for x
    x = 45,028,203.99/8,472.50
  6. Step 6: Final answer
    x = 5,314.63

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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.