Home / 8,183.91-12,279.51-2,988.57

Finding the Fourth Proportional to 8,183.91, 12,279.51 and 2,988.57

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Solution

The fourth proportional to 8,183.91, 12,279.51 and 2,988.57 is: 4,484.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,183.91 : 12,279.51 = 2,988.57 : x
  2. Step 2: Convert to fraction form
    8,183.91/12,279.51 = 2,988.57/x
  3. Step 3: Cross multiply
    8,183.91x = 12,279.51 × 2,988.57
  4. Step 4: Simplify right side
    8,183.91x = 36,698,175.20
  5. Step 5: Solve for x
    x = 36,698,175.20/8,183.91
  6. Step 6: Final answer
    x = 4,484.19

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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.