Home / 3,929.78-5,424.36-2,517.27

Finding the Fourth Proportional to 3,929.78, 5,424.36 and 2,517.27

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Solution

The fourth proportional to 3,929.78, 5,424.36 and 2,517.27 is: 3,474.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.78 : 5,424.36 = 2,517.27 : x
  2. Step 2: Convert to fraction form
    3,929.78/5,424.36 = 2,517.27/x
  3. Step 3: Cross multiply
    3,929.78x = 5,424.36 × 2,517.27
  4. Step 4: Simplify right side
    3,929.78x = 13,654,588.14
  5. Step 5: Solve for x
    x = 13,654,588.14/3,929.78
  6. Step 6: Final answer
    x = 3,474.64

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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.