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Finding the Fourth Proportional to 8,635.98, 12,864.84 and 8,374.62

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Solution

The fourth proportional to 8,635.98, 12,864.84 and 8,374.62 is: 12,475.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.98 : 12,864.84 = 8,374.62 : x
  2. Step 2: Convert to fraction form
    8,635.98/12,864.84 = 8,374.62/x
  3. Step 3: Cross multiply
    8,635.98x = 12,864.84 × 8,374.62
  4. Step 4: Simplify right side
    8,635.98x = 107,738,188.54
  5. Step 5: Solve for x
    x = 107,738,188.54/8,635.98
  6. Step 6: Final answer
    x = 12,475.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.