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Finding the Fourth Proportional to 9,288.60, 13,932.90 and 8,486.70

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Solution

The fourth proportional to 9,288.60, 13,932.90 and 8,486.70 is: 12,730.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,288.60 : 13,932.90 = 8,486.70 : x
  2. Step 2: Convert to fraction form
    9,288.60/13,932.90 = 8,486.70/x
  3. Step 3: Cross multiply
    9,288.60x = 13,932.90 × 8,486.70
  4. Step 4: Simplify right side
    9,288.60x = 118,244,342.43
  5. Step 5: Solve for x
    x = 118,244,342.43/9,288.60
  6. Step 6: Final answer
    x = 12,730.05

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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.