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Finding the Fourth Proportional to 8,636.61, 12,955.22 and 2,793.07

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Solution

The fourth proportional to 8,636.61, 12,955.22 and 2,793.07 is: 4,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.61 : 12,955.22 = 2,793.07 : x
  2. Step 2: Convert to fraction form
    8,636.61/12,955.22 = 2,793.07/x
  3. Step 3: Cross multiply
    8,636.61x = 12,955.22 × 2,793.07
  4. Step 4: Simplify right side
    8,636.61x = 36,184,836.33
  5. Step 5: Solve for x
    x = 36,184,836.33/8,636.61
  6. Step 6: Final answer
    x = 4,189.70

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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.