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Finding the Fourth Proportional to 8,606.79, 12,910.20 and 4,709.07

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Solution

The fourth proportional to 8,606.79, 12,910.20 and 4,709.07 is: 7,063.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.79 : 12,910.20 = 4,709.07 : x
  2. Step 2: Convert to fraction form
    8,606.79/12,910.20 = 4,709.07/x
  3. Step 3: Cross multiply
    8,606.79x = 12,910.20 × 4,709.07
  4. Step 4: Simplify right side
    8,606.79x = 60,795,035.51
  5. Step 5: Solve for x
    x = 60,795,035.51/8,606.79
  6. Step 6: Final answer
    x = 7,063.61

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Double scale
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Similar ratio
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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.