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Finding the Fourth Proportional to 8,698.56, 13,047.84 and 2,855.12

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Solution

The fourth proportional to 8,698.56, 13,047.84 and 2,855.12 is: 4,282.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.56 : 13,047.84 = 2,855.12 : x
  2. Step 2: Convert to fraction form
    8,698.56/13,047.84 = 2,855.12/x
  3. Step 3: Cross multiply
    8,698.56x = 13,047.84 × 2,855.12
  4. Step 4: Simplify right side
    8,698.56x = 37,253,148.94
  5. Step 5: Solve for x
    x = 37,253,148.94/8,698.56
  6. Step 6: Final answer
    x = 4,282.68

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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.