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Finding the Fourth Proportional to 8,479.83, 12,720.31 and 2,933.71

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Solution

The fourth proportional to 8,479.83, 12,720.31 and 2,933.71 is: 4,400.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,479.83 : 12,720.31 = 2,933.71 : x
  2. Step 2: Convert to fraction form
    8,479.83/12,720.31 = 2,933.71/x
  3. Step 3: Cross multiply
    8,479.83x = 12,720.31 × 2,933.71
  4. Step 4: Simplify right side
    8,479.83x = 37,317,700.65
  5. Step 5: Solve for x
    x = 37,317,700.65/8,479.83
  6. Step 6: Final answer
    x = 4,400.76

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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.