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Finding the Fourth Proportional to 8,188.60, 12,282.60 and 2,345.20

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Solution

The fourth proportional to 8,188.60, 12,282.60 and 2,345.20 is: 3,517.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.60 : 12,282.60 = 2,345.20 : x
  2. Step 2: Convert to fraction form
    8,188.60/12,282.60 = 2,345.20/x
  3. Step 3: Cross multiply
    8,188.60x = 12,282.60 × 2,345.20
  4. Step 4: Simplify right side
    8,188.60x = 28,805,153.52
  5. Step 5: Solve for x
    x = 28,805,153.52/8,188.60
  6. Step 6: Final answer
    x = 3,517.71

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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.