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Finding the Fourth Proportional to 8,188.64, 12,280.64 and 2,343.68

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Solution

The fourth proportional to 8,188.64, 12,280.64 and 2,343.68 is: 3,514.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,188.64 : 12,280.64 = 2,343.68 : x
  2. Step 2: Convert to fraction form
    8,188.64/12,280.64 = 2,343.68/x
  3. Step 3: Cross multiply
    8,188.64x = 12,280.64 × 2,343.68
  4. Step 4: Simplify right side
    8,188.64x = 28,781,890.36
  5. Step 5: Solve for x
    x = 28,781,890.36/8,188.64
  6. Step 6: Final answer
    x = 3,514.86

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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.