Home / 3,177.64-4,388.82-2,181.28

Finding the Fourth Proportional to 3,177.64, 4,388.82 and 2,181.28

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Solution

The fourth proportional to 3,177.64, 4,388.82 and 2,181.28 is: 3,012.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,177.64 : 4,388.82 = 2,181.28 : x
  2. Step 2: Convert to fraction form
    3,177.64/4,388.82 = 2,181.28/x
  3. Step 3: Cross multiply
    3,177.64x = 4,388.82 × 2,181.28
  4. Step 4: Simplify right side
    3,177.64x = 9,573,245.29
  5. Step 5: Solve for x
    x = 9,573,245.29/3,177.64
  6. Step 6: Final answer
    x = 3,012.69

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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.