Home / 2,815.32-3,876.06-2,317.11

Finding the Fourth Proportional to 2,815.32, 3,876.06 and 2,317.11

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Solution

The fourth proportional to 2,815.32, 3,876.06 and 2,317.11 is: 3,190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.32 : 3,876.06 = 2,317.11 : x
  2. Step 2: Convert to fraction form
    2,815.32/3,876.06 = 2,317.11/x
  3. Step 3: Cross multiply
    2,815.32x = 3,876.06 × 2,317.11
  4. Step 4: Simplify right side
    2,815.32x = 8,981,257.39
  5. Step 5: Solve for x
    x = 8,981,257.39/2,815.32
  6. Step 6: Final answer
    x = 3,190.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.