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Finding the Fourth Proportional to 8,482.87, 12,721.52 and 2,859.03

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Solution

The fourth proportional to 8,482.87, 12,721.52 and 2,859.03 is: 4,287.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,482.87 : 12,721.52 = 2,859.03 : x
  2. Step 2: Convert to fraction form
    8,482.87/12,721.52 = 2,859.03/x
  3. Step 3: Cross multiply
    8,482.87x = 12,721.52 × 2,859.03
  4. Step 4: Simplify right side
    8,482.87x = 36,371,215.68
  5. Step 5: Solve for x
    x = 36,371,215.68/8,482.87
  6. Step 6: Final answer
    x = 4,287.61

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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.