Home / 5,126.97-7,078.68-3,929.82

Finding the Fourth Proportional to 5,126.97, 7,078.68 and 3,929.82

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Solution

The fourth proportional to 5,126.97, 7,078.68 and 3,929.82 is: 5,425.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.97 : 7,078.68 = 3,929.82 : x
  2. Step 2: Convert to fraction form
    5,126.97/7,078.68 = 3,929.82/x
  3. Step 3: Cross multiply
    5,126.97x = 7,078.68 × 3,929.82
  4. Step 4: Simplify right side
    5,126.97x = 27,817,938.24
  5. Step 5: Solve for x
    x = 27,817,938.24/5,126.97
  6. Step 6: Final answer
    x = 5,425.80

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1.5x scale

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.