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Finding the Fourth Proportional to 8,781.48, 13,175.94 and 4,620.48

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Solution

The fourth proportional to 8,781.48, 13,175.94 and 4,620.48 is: 6,932.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.48 : 13,175.94 = 4,620.48 : x
  2. Step 2: Convert to fraction form
    8,781.48/13,175.94 = 4,620.48/x
  3. Step 3: Cross multiply
    8,781.48x = 13,175.94 × 4,620.48
  4. Step 4: Simplify right side
    8,781.48x = 60,879,167.25
  5. Step 5: Solve for x
    x = 60,879,167.25/8,781.48
  6. Step 6: Final answer
    x = 6,932.68

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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.