Home / 7,821.36-11,732.39-2,556.69

Finding the Fourth Proportional to 7,821.36, 11,732.39 and 2,556.69

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Solution

The fourth proportional to 7,821.36, 11,732.39 and 2,556.69 is: 3,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.36 : 11,732.39 = 2,556.69 : x
  2. Step 2: Convert to fraction form
    7,821.36/11,732.39 = 2,556.69/x
  3. Step 3: Cross multiply
    7,821.36x = 11,732.39 × 2,556.69
  4. Step 4: Simplify right side
    7,821.36x = 29,996,071.41
  5. Step 5: Solve for x
    x = 29,996,071.41/7,821.36
  6. Step 6: Final answer
    x = 3,835.15

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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.