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Finding the Fourth Proportional to 8,310.36, 12,472.84 and 7,012.74

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Solution

The fourth proportional to 8,310.36, 12,472.84 and 7,012.74 is: 10,525.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,310.36 : 12,472.84 = 7,012.74 : x
  2. Step 2: Convert to fraction form
    8,310.36/12,472.84 = 7,012.74/x
  3. Step 3: Cross multiply
    8,310.36x = 12,472.84 × 7,012.74
  4. Step 4: Simplify right side
    8,310.36x = 87,468,783.98
  5. Step 5: Solve for x
    x = 87,468,783.98/8,310.36
  6. Step 6: Final answer
    x = 10,525.27

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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.