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Finding the Fourth Proportional to 8,486.67, 11,711.39 and 4,709.64

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Solution

The fourth proportional to 8,486.67, 11,711.39 and 4,709.64 is: 6,499.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.67 : 11,711.39 = 4,709.64 : x
  2. Step 2: Convert to fraction form
    8,486.67/11,711.39 = 4,709.64/x
  3. Step 3: Cross multiply
    8,486.67x = 11,711.39 × 4,709.64
  4. Step 4: Simplify right side
    8,486.67x = 55,156,451.17
  5. Step 5: Solve for x
    x = 55,156,451.17/8,486.67
  6. Step 6: Final answer
    x = 6,499.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.