Home / 3,929.18-5,422.35-2,250.39

Finding the Fourth Proportional to 3,929.18, 5,422.35 and 2,250.39

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Solution

The fourth proportional to 3,929.18, 5,422.35 and 2,250.39 is: 3,105.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.18 : 5,422.35 = 2,250.39 : x
  2. Step 2: Convert to fraction form
    3,929.18/5,422.35 = 2,250.39/x
  3. Step 3: Cross multiply
    3,929.18x = 5,422.35 × 2,250.39
  4. Step 4: Simplify right side
    3,929.18x = 12,202,402.22
  5. Step 5: Solve for x
    x = 12,202,402.22/3,929.18
  6. Step 6: Final answer
    x = 3,105.59

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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.