Home / 5,128.73-7,696.13-2,166.99

Finding the Fourth Proportional to 5,128.73, 7,696.13 and 2,166.99

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Solution

The fourth proportional to 5,128.73, 7,696.13 and 2,166.99 is: 3,251.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.73 : 7,696.13 = 2,166.99 : x
  2. Step 2: Convert to fraction form
    5,128.73/7,696.13 = 2,166.99/x
  3. Step 3: Cross multiply
    5,128.73x = 7,696.13 × 2,166.99
  4. Step 4: Simplify right side
    5,128.73x = 16,677,400.10
  5. Step 5: Solve for x
    x = 16,677,400.10/5,128.73
  6. Step 6: Final answer
    x = 3,251.76

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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.