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Finding the Fourth Proportional to 8,863.40, 13,295.12 and 8,322.12

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Solution

The fourth proportional to 8,863.40, 13,295.12 and 8,322.12 is: 12,483.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.40 : 13,295.12 = 8,322.12 : x
  2. Step 2: Convert to fraction form
    8,863.40/13,295.12 = 8,322.12/x
  3. Step 3: Cross multiply
    8,863.40x = 13,295.12 × 8,322.12
  4. Step 4: Simplify right side
    8,863.40x = 110,643,584.05
  5. Step 5: Solve for x
    x = 110,643,584.05/8,863.40
  6. Step 6: Final answer
    x = 12,483.20

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Double scale
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Similar ratio
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1.5x scale

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.