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Finding the Fourth Proportional to 8,230.65, 12,345.98 and 3,851.19

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Solution

The fourth proportional to 8,230.65, 12,345.98 and 3,851.19 is: 5,776.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,230.65 : 12,345.98 = 3,851.19 : x
  2. Step 2: Convert to fraction form
    8,230.65/12,345.98 = 3,851.19/x
  3. Step 3: Cross multiply
    8,230.65x = 12,345.98 × 3,851.19
  4. Step 4: Simplify right side
    8,230.65x = 47,546,633.73
  5. Step 5: Solve for x
    x = 47,546,633.73/8,230.65
  6. Step 6: Final answer
    x = 5,776.78

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Similar ratio
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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.