Home / 8,861.60-13,272.25-6,871.28

Finding the Fourth Proportional to 8,861.60, 13,272.25 and 6,871.28

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Solution

The fourth proportional to 8,861.60, 13,272.25 and 6,871.28 is: 10,291.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.60 : 13,272.25 = 6,871.28 : x
  2. Step 2: Convert to fraction form
    8,861.60/13,272.25 = 6,871.28/x
  3. Step 3: Cross multiply
    8,861.60x = 13,272.25 × 6,871.28
  4. Step 4: Simplify right side
    8,861.60x = 91,197,245.26
  5. Step 5: Solve for x
    x = 91,197,245.26/8,861.60
  6. Step 6: Final answer
    x = 10,291.29

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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.