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Finding the Fourth Proportional to 8,722.77, 13,080.99 and 4,776.96

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Solution

The fourth proportional to 8,722.77, 13,080.99 and 4,776.96 is: 7,163.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.77 : 13,080.99 = 4,776.96 : x
  2. Step 2: Convert to fraction form
    8,722.77/13,080.99 = 4,776.96/x
  3. Step 3: Cross multiply
    8,722.77x = 13,080.99 × 4,776.96
  4. Step 4: Simplify right side
    8,722.77x = 62,487,365.99
  5. Step 5: Solve for x
    x = 62,487,365.99/8,722.77
  6. Step 6: Final answer
    x = 7,163.71

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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.