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Finding the Fourth Proportional to 8,191.67, 12,289.35 and 2,997.50

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Solution

The fourth proportional to 8,191.67, 12,289.35 and 2,997.50 is: 4,496.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.67 : 12,289.35 = 2,997.50 : x
  2. Step 2: Convert to fraction form
    8,191.67/12,289.35 = 2,997.50/x
  3. Step 3: Cross multiply
    8,191.67x = 12,289.35 × 2,997.50
  4. Step 4: Simplify right side
    8,191.67x = 36,837,326.63
  5. Step 5: Solve for x
    x = 36,837,326.63/8,191.67
  6. Step 6: Final answer
    x = 4,496.93

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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.