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Finding the Fourth Proportional to 8,445.52, 11,648.17 and 7,879.62

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Solution

The fourth proportional to 8,445.52, 11,648.17 and 7,879.62 is: 10,867.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,445.52 : 11,648.17 = 7,879.62 : x
  2. Step 2: Convert to fraction form
    8,445.52/11,648.17 = 7,879.62/x
  3. Step 3: Cross multiply
    8,445.52x = 11,648.17 × 7,879.62
  4. Step 4: Simplify right side
    8,445.52x = 91,783,153.30
  5. Step 5: Solve for x
    x = 91,783,153.30/8,445.52
  6. Step 6: Final answer
    x = 10,867.67

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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.