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Finding the Fourth Proportional to 7,855.56, 11,787.36 and 4,344.92

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Solution

The fourth proportional to 7,855.56, 11,787.36 and 4,344.92 is: 6,519.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.56 : 11,787.36 = 4,344.92 : x
  2. Step 2: Convert to fraction form
    7,855.56/11,787.36 = 4,344.92/x
  3. Step 3: Cross multiply
    7,855.56x = 11,787.36 × 4,344.92
  4. Step 4: Simplify right side
    7,855.56x = 51,215,136.21
  5. Step 5: Solve for x
    x = 51,215,136.21/7,855.56
  6. Step 6: Final answer
    x = 6,519.60

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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.