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Finding the Fourth Proportional to 8,719.69, 13,081.38 and 2,876.17

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Solution

The fourth proportional to 8,719.69, 13,081.38 and 2,876.17 is: 4,314.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.69 : 13,081.38 = 2,876.17 : x
  2. Step 2: Convert to fraction form
    8,719.69/13,081.38 = 2,876.17/x
  3. Step 3: Cross multiply
    8,719.69x = 13,081.38 × 2,876.17
  4. Step 4: Simplify right side
    8,719.69x = 37,624,272.71
  5. Step 5: Solve for x
    x = 37,624,272.71/8,719.69
  6. Step 6: Final answer
    x = 4,314.86

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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.