Home / 5,179.29-7,147.17-2,940.87

Finding the Fourth Proportional to 5,179.29, 7,147.17 and 2,940.87

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Solution

The fourth proportional to 5,179.29, 7,147.17 and 2,940.87 is: 4,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,179.29 : 7,147.17 = 2,940.87 : x
  2. Step 2: Convert to fraction form
    5,179.29/7,147.17 = 2,940.87/x
  3. Step 3: Cross multiply
    5,179.29x = 7,147.17 × 2,940.87
  4. Step 4: Simplify right side
    5,179.29x = 21,018,897.84
  5. Step 5: Solve for x
    x = 21,018,897.84/5,179.29
  6. Step 6: Final answer
    x = 4,058.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.