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Finding the Fourth Proportional to 8,311.63, 11,470.05 and 4,774.60

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Solution

The fourth proportional to 8,311.63, 11,470.05 and 4,774.60 is: 6,588.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.63 : 11,470.05 = 4,774.60 : x
  2. Step 2: Convert to fraction form
    8,311.63/11,470.05 = 4,774.60/x
  3. Step 3: Cross multiply
    8,311.63x = 11,470.05 × 4,774.60
  4. Step 4: Simplify right side
    8,311.63x = 54,764,900.73
  5. Step 5: Solve for x
    x = 54,764,900.73/8,311.63
  6. Step 6: Final answer
    x = 6,588.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.