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Finding the Fourth Proportional to 8,392.80, 12,588.30 and 2,236.80

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Solution

The fourth proportional to 8,392.80, 12,588.30 and 2,236.80 is: 3,354.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.80 : 12,588.30 = 2,236.80 : x
  2. Step 2: Convert to fraction form
    8,392.80/12,588.30 = 2,236.80/x
  3. Step 3: Cross multiply
    8,392.80x = 12,588.30 × 2,236.80
  4. Step 4: Simplify right side
    8,392.80x = 28,157,509.44
  5. Step 5: Solve for x
    x = 28,157,509.44/8,392.80
  6. Step 6: Final answer
    x = 3,354.96

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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.