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Finding the Fourth Proportional to 3,774.78, 5,209.86 and 2,203.74

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Solution

The fourth proportional to 3,774.78, 5,209.86 and 2,203.74 is: 3,041.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774.78 : 5,209.86 = 2,203.74 : x
  2. Step 2: Convert to fraction form
    3,774.78/5,209.86 = 2,203.74/x
  3. Step 3: Cross multiply
    3,774.78x = 5,209.86 × 2,203.74
  4. Step 4: Simplify right side
    3,774.78x = 11,481,176.88
  5. Step 5: Solve for x
    x = 11,481,176.88/3,774.78
  6. Step 6: Final answer
    x = 3,041.55

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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.