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Finding the Fourth Proportional to 8,858.96, 12,228.72 and 6,965.60

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Solution

The fourth proportional to 8,858.96, 12,228.72 and 6,965.60 is: 9,615.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.96 : 12,228.72 = 6,965.60 : x
  2. Step 2: Convert to fraction form
    8,858.96/12,228.72 = 6,965.60/x
  3. Step 3: Cross multiply
    8,858.96x = 12,228.72 × 6,965.60
  4. Step 4: Simplify right side
    8,858.96x = 85,180,372.03
  5. Step 5: Solve for x
    x = 85,180,372.03/8,858.96
  6. Step 6: Final answer
    x = 9,615.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.