Home / 7,857.18-11,787.79-2,310.71

Finding the Fourth Proportional to 7,857.18, 11,787.79 and 2,310.71

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Solution

The fourth proportional to 7,857.18, 11,787.79 and 2,310.71 is: 3,466.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.18 : 11,787.79 = 2,310.71 : x
  2. Step 2: Convert to fraction form
    7,857.18/11,787.79 = 2,310.71/x
  3. Step 3: Cross multiply
    7,857.18x = 11,787.79 × 2,310.71
  4. Step 4: Simplify right side
    7,857.18x = 27,238,105.29
  5. Step 5: Solve for x
    x = 27,238,105.29/7,857.18
  6. Step 6: Final answer
    x = 3,466.65

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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.