Home / 3,775.11-5,209.49-2,181.51

Finding the Fourth Proportional to 3,775.11, 5,209.49 and 2,181.51

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Solution

The fourth proportional to 3,775.11, 5,209.49 and 2,181.51 is: 3,010.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,775.11 : 5,209.49 = 2,181.51 : x
  2. Step 2: Convert to fraction form
    3,775.11/5,209.49 = 2,181.51/x
  3. Step 3: Cross multiply
    3,775.11x = 5,209.49 × 2,181.51
  4. Step 4: Simplify right side
    3,775.11x = 11,364,539.20
  5. Step 5: Solve for x
    x = 11,364,539.20/3,775.11
  6. Step 6: Final answer
    x = 3,010.39

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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.