Home / 3,801.39-5,245.71-2,122.74

Finding the Fourth Proportional to 3,801.39, 5,245.71 and 2,122.74

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Solution

The fourth proportional to 3,801.39, 5,245.71 and 2,122.74 is: 2,929.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,801.39 : 5,245.71 = 2,122.74 : x
  2. Step 2: Convert to fraction form
    3,801.39/5,245.71 = 2,122.74/x
  3. Step 3: Cross multiply
    3,801.39x = 5,245.71 × 2,122.74
  4. Step 4: Simplify right side
    3,801.39x = 11,135,278.45
  5. Step 5: Solve for x
    x = 11,135,278.45/3,801.39
  6. Step 6: Final answer
    x = 2,929.26

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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.