Home / 7,422.40-11,124-3,521.44

Finding the Fourth Proportional to 7,422.40, 11,124 and 3,521.44

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Solution

The fourth proportional to 7,422.40, 11,124 and 3,521.44 is: 5,277.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,422.40 : 11,124 = 3,521.44 : x
  2. Step 2: Convert to fraction form
    7,422.40/11,124 = 3,521.44/x
  3. Step 3: Cross multiply
    7,422.40x = 11,124 × 3,521.44
  4. Step 4: Simplify right side
    7,422.40x = 39,172,498.56
  5. Step 5: Solve for x
    x = 39,172,498.56/7,422.40
  6. Step 6: Final answer
    x = 5,277.61

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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.