Home / 7,811.04-11,721.75-3,651.37

Finding the Fourth Proportional to 7,811.04, 11,721.75 and 3,651.37

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Solution

The fourth proportional to 7,811.04, 11,721.75 and 3,651.37 is: 5,479.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.04 : 11,721.75 = 3,651.37 : x
  2. Step 2: Convert to fraction form
    7,811.04/11,721.75 = 3,651.37/x
  3. Step 3: Cross multiply
    7,811.04x = 11,721.75 × 3,651.37
  4. Step 4: Simplify right side
    7,811.04x = 42,800,446.30
  5. Step 5: Solve for x
    x = 42,800,446.30/7,811.04
  6. Step 6: Final answer
    x = 5,479.48

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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.