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Finding the Fourth Proportional to 8,145.55, 12,213.06 and 5,226.31

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Solution

The fourth proportional to 8,145.55, 12,213.06 and 5,226.31 is: 7,836.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,145.55 : 12,213.06 = 5,226.31 : x
  2. Step 2: Convert to fraction form
    8,145.55/12,213.06 = 5,226.31/x
  3. Step 3: Cross multiply
    8,145.55x = 12,213.06 × 5,226.31
  4. Step 4: Simplify right side
    8,145.55x = 63,829,237.61
  5. Step 5: Solve for x
    x = 63,829,237.61/8,145.55
  6. Step 6: Final answer
    x = 7,836.09

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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.