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Finding the Fourth Proportional to 8,813.77, 13,211.69 and 5,529.16

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Solution

The fourth proportional to 8,813.77, 13,211.69 and 5,529.16 is: 8,288.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.77 : 13,211.69 = 5,529.16 : x
  2. Step 2: Convert to fraction form
    8,813.77/13,211.69 = 5,529.16/x
  3. Step 3: Cross multiply
    8,813.77x = 13,211.69 × 5,529.16
  4. Step 4: Simplify right side
    8,813.77x = 73,049,454.18
  5. Step 5: Solve for x
    x = 73,049,454.18/8,813.77
  6. Step 6: Final answer
    x = 8,288.11

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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.