Home / 3,929.54-5,921.23-3,251.42

Finding the Fourth Proportional to 3,929.54, 5,921.23 and 3,251.42

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Solution

The fourth proportional to 3,929.54, 5,921.23 and 3,251.42 is: 4,899.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.54 : 5,921.23 = 3,251.42 : x
  2. Step 2: Convert to fraction form
    3,929.54/5,921.23 = 3,251.42/x
  3. Step 3: Cross multiply
    3,929.54x = 5,921.23 × 3,251.42
  4. Step 4: Simplify right side
    3,929.54x = 19,252,370.41
  5. Step 5: Solve for x
    x = 19,252,370.41/3,929.54
  6. Step 6: Final answer
    x = 4,899.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.