Home / 7,818.30-11,729.91-3,439.44

Finding the Fourth Proportional to 7,818.30, 11,729.91 and 3,439.44

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Solution

The fourth proportional to 7,818.30, 11,729.91 and 3,439.44 is: 5,160.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.30 : 11,729.91 = 3,439.44 : x
  2. Step 2: Convert to fraction form
    7,818.30/11,729.91 = 3,439.44/x
  3. Step 3: Cross multiply
    7,818.30x = 11,729.91 × 3,439.44
  4. Step 4: Simplify right side
    7,818.30x = 40,344,321.65
  5. Step 5: Solve for x
    x = 40,344,321.65/7,818.30
  6. Step 6: Final answer
    x = 5,160.24

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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.