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Finding the Fourth Proportional to 8,487.65, 11,711.99 and 4,709.83

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Solution

The fourth proportional to 8,487.65, 11,711.99 and 4,709.83 is: 6,499.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,487.65 : 11,711.99 = 4,709.83 : x
  2. Step 2: Convert to fraction form
    8,487.65/11,711.99 = 4,709.83/x
  3. Step 3: Cross multiply
    8,487.65x = 11,711.99 × 4,709.83
  4. Step 4: Simplify right side
    8,487.65x = 55,161,481.86
  5. Step 5: Solve for x
    x = 55,161,481.86/8,487.65
  6. Step 6: Final answer
    x = 6,499.03

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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.