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Finding the Fourth Proportional to 6,309.90, 8,708.31 and 3,792.83

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Solution

The fourth proportional to 6,309.90, 8,708.31 and 3,792.83 is: 5,234.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,309.90 : 8,708.31 = 3,792.83 : x
  2. Step 2: Convert to fraction form
    6,309.90/8,708.31 = 3,792.83/x
  3. Step 3: Cross multiply
    6,309.90x = 8,708.31 × 3,792.83
  4. Step 4: Simplify right side
    6,309.90x = 33,029,095.88
  5. Step 5: Solve for x
    x = 33,029,095.88/6,309.90
  6. Step 6: Final answer
    x = 5,234.49

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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.