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Finding the Fourth Proportional to 8,669.28, 13,005 and 2,824.32

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Solution

The fourth proportional to 8,669.28, 13,005 and 2,824.32 is: 4,236.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,669.28 : 13,005 = 2,824.32 : x
  2. Step 2: Convert to fraction form
    8,669.28/13,005 = 2,824.32/x
  3. Step 3: Cross multiply
    8,669.28x = 13,005 × 2,824.32
  4. Step 4: Simplify right side
    8,669.28x = 36,730,281.60
  5. Step 5: Solve for x
    x = 36,730,281.60/8,669.28
  6. Step 6: Final answer
    x = 4,236.83

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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.