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Finding the Fourth Proportional to 8,648.48, 12,976.96 and 5,360.70

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Solution

The fourth proportional to 8,648.48, 12,976.96 and 5,360.70 is: 8,043.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,648.48 : 12,976.96 = 5,360.70 : x
  2. Step 2: Convert to fraction form
    8,648.48/12,976.96 = 5,360.70/x
  3. Step 3: Cross multiply
    8,648.48x = 12,976.96 × 5,360.70
  4. Step 4: Simplify right side
    8,648.48x = 69,565,589.47
  5. Step 5: Solve for x
    x = 69,565,589.47/8,648.48
  6. Step 6: Final answer
    x = 8,043.68

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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.