Home / 3,929.19-5,419.92-2,335.26

Finding the Fourth Proportional to 3,929.19, 5,419.92 and 2,335.26

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Solution

The fourth proportional to 3,929.19, 5,419.92 and 2,335.26 is: 3,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.19 : 5,419.92 = 2,335.26 : x
  2. Step 2: Convert to fraction form
    3,929.19/5,419.92 = 2,335.26/x
  3. Step 3: Cross multiply
    3,929.19x = 5,419.92 × 2,335.26
  4. Step 4: Simplify right side
    3,929.19x = 12,656,922.38
  5. Step 5: Solve for x
    x = 12,656,922.38/3,929.19
  6. Step 6: Final answer
    x = 3,221.25

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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.