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Finding the Fourth Proportional to 3,774.66, 5,209.65 and 2,181.39

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Solution

The fourth proportional to 3,774.66, 5,209.65 and 2,181.39 is: 3,010.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,774.66 : 5,209.65 = 2,181.39 : x
  2. Step 2: Convert to fraction form
    3,774.66/5,209.65 = 2,181.39/x
  3. Step 3: Cross multiply
    3,774.66x = 5,209.65 × 2,181.39
  4. Step 4: Simplify right side
    3,774.66x = 11,364,278.41
  5. Step 5: Solve for x
    x = 11,364,278.41/3,774.66
  6. Step 6: Final answer
    x = 3,010.68

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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.