Home / 3,801.25-5,245.73-2,145.25

Finding the Fourth Proportional to 3,801.25, 5,245.73 and 2,145.25

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Solution

The fourth proportional to 3,801.25, 5,245.73 and 2,145.25 is: 2,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,801.25 : 5,245.73 = 2,145.25 : x
  2. Step 2: Convert to fraction form
    3,801.25/5,245.73 = 2,145.25/x
  3. Step 3: Cross multiply
    3,801.25x = 5,245.73 × 2,145.25
  4. Step 4: Simplify right side
    3,801.25x = 11,253,402.28
  5. Step 5: Solve for x
    x = 11,253,402.28/3,801.25
  6. Step 6: Final answer
    x = 2,960.45

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Half scale
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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.