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Finding the Fourth Proportional to 8,623.44, 12,859.70 and 8,544.62

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Solution

The fourth proportional to 8,623.44, 12,859.70 and 8,544.62 is: 12,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.44 : 12,859.70 = 8,544.62 : x
  2. Step 2: Convert to fraction form
    8,623.44/12,859.70 = 8,544.62/x
  3. Step 3: Cross multiply
    8,623.44x = 12,859.70 × 8,544.62
  4. Step 4: Simplify right side
    8,623.44x = 109,881,142.79
  5. Step 5: Solve for x
    x = 109,881,142.79/8,623.44
  6. Step 6: Final answer
    x = 12,742.15

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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.