Home / 3,929.41-5,419.56-2,867.01

Finding the Fourth Proportional to 3,929.41, 5,419.56 and 2,867.01

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Solution

The fourth proportional to 3,929.41, 5,419.56 and 2,867.01 is: 3,954.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.41 : 5,419.56 = 2,867.01 : x
  2. Step 2: Convert to fraction form
    3,929.41/5,419.56 = 2,867.01/x
  3. Step 3: Cross multiply
    3,929.41x = 5,419.56 × 2,867.01
  4. Step 4: Simplify right side
    3,929.41x = 15,537,932.72
  5. Step 5: Solve for x
    x = 15,537,932.72/3,929.41
  6. Step 6: Final answer
    x = 3,954.27

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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.