Home / 3,929.10-5,415.62-3,370.20

Finding the Fourth Proportional to 3,929.10, 5,415.62 and 3,370.20

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Solution

The fourth proportional to 3,929.10, 5,415.62 and 3,370.20 is: 4,645.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.10 : 5,415.62 = 3,370.20 : x
  2. Step 2: Convert to fraction form
    3,929.10/5,415.62 = 3,370.20/x
  3. Step 3: Cross multiply
    3,929.10x = 5,415.62 × 3,370.20
  4. Step 4: Simplify right side
    3,929.10x = 18,251,722.52
  5. Step 5: Solve for x
    x = 18,251,722.52/3,929.10
  6. Step 6: Final answer
    x = 4,645.27

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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.