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Finding the Fourth Proportional to 8,279.45, 12,404.72 and 6,901.64

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Solution

The fourth proportional to 8,279.45, 12,404.72 and 6,901.64 is: 10,340.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.45 : 12,404.72 = 6,901.64 : x
  2. Step 2: Convert to fraction form
    8,279.45/12,404.72 = 6,901.64/x
  3. Step 3: Cross multiply
    8,279.45x = 12,404.72 × 6,901.64
  4. Step 4: Simplify right side
    8,279.45x = 85,612,911.74
  5. Step 5: Solve for x
    x = 85,612,911.74/8,279.45
  6. Step 6: Final answer
    x = 10,340.41

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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.