Home / 7,858.71-11,787.91-2,311.93

Finding the Fourth Proportional to 7,858.71, 11,787.91 and 2,311.93

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Solution

The fourth proportional to 7,858.71, 11,787.91 and 2,311.93 is: 3,467.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.71 : 11,787.91 = 2,311.93 : x
  2. Step 2: Convert to fraction form
    7,858.71/11,787.91 = 2,311.93/x
  3. Step 3: Cross multiply
    7,858.71x = 11,787.91 × 2,311.93
  4. Step 4: Simplify right side
    7,858.71x = 27,252,822.77
  5. Step 5: Solve for x
    x = 27,252,822.77/7,858.71
  6. Step 6: Final answer
    x = 3,467.85

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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.