Home / 7,721.40-11,582.12-2,174.75

Finding the Fourth Proportional to 7,721.40, 11,582.12 and 2,174.75

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Solution

The fourth proportional to 7,721.40, 11,582.12 and 2,174.75 is: 3,262.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.40 : 11,582.12 = 2,174.75 : x
  2. Step 2: Convert to fraction form
    7,721.40/11,582.12 = 2,174.75/x
  3. Step 3: Cross multiply
    7,721.40x = 11,582.12 × 2,174.75
  4. Step 4: Simplify right side
    7,721.40x = 25,188,146.69
  5. Step 5: Solve for x
    x = 25,188,146.69/7,721.40
  6. Step 6: Final answer
    x = 3,262.12

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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.