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Finding the Fourth Proportional to 8,279.57, 12,420.59 and 2,733.50

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Solution

The fourth proportional to 8,279.57, 12,420.59 and 2,733.50 is: 4,100.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.57 : 12,420.59 = 2,733.50 : x
  2. Step 2: Convert to fraction form
    8,279.57/12,420.59 = 2,733.50/x
  3. Step 3: Cross multiply
    8,279.57x = 12,420.59 × 2,733.50
  4. Step 4: Simplify right side
    8,279.57x = 33,951,682.77
  5. Step 5: Solve for x
    x = 33,951,682.77/8,279.57
  6. Step 6: Final answer
    x = 4,100.66

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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.