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Finding the Fourth Proportional to 8,991.77, 13,485.11 and 5,382.95

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Solution

The fourth proportional to 8,991.77, 13,485.11 and 5,382.95 is: 8,072.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.77 : 13,485.11 = 5,382.95 : x
  2. Step 2: Convert to fraction form
    8,991.77/13,485.11 = 5,382.95/x
  3. Step 3: Cross multiply
    8,991.77x = 13,485.11 × 5,382.95
  4. Step 4: Simplify right side
    8,991.77x = 72,589,578.53
  5. Step 5: Solve for x
    x = 72,589,578.53/8,991.77
  6. Step 6: Final answer
    x = 8,072.90

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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.