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Finding the Fourth Proportional to 8,257.64, 12,384.84 and 2,412.89

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Solution

The fourth proportional to 8,257.64, 12,384.84 and 2,412.89 is: 3,618.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,257.64 : 12,384.84 = 2,412.89 : x
  2. Step 2: Convert to fraction form
    8,257.64/12,384.84 = 2,412.89/x
  3. Step 3: Cross multiply
    8,257.64x = 12,384.84 × 2,412.89
  4. Step 4: Simplify right side
    8,257.64x = 29,883,194.66
  5. Step 5: Solve for x
    x = 29,883,194.66/8,257.64
  6. Step 6: Final answer
    x = 3,618.85

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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.