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Finding the Fourth Proportional to 8,868.76, 13,311.37 and 4,489.32

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Solution

The fourth proportional to 8,868.76, 13,311.37 and 4,489.32 is: 6,738.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.76 : 13,311.37 = 4,489.32 : x
  2. Step 2: Convert to fraction form
    8,868.76/13,311.37 = 4,489.32/x
  3. Step 3: Cross multiply
    8,868.76x = 13,311.37 × 4,489.32
  4. Step 4: Simplify right side
    8,868.76x = 59,758,999.57
  5. Step 5: Solve for x
    x = 59,758,999.57/8,868.76
  6. Step 6: Final answer
    x = 6,738.15

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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.