Home / 2,174.21-3,000.38-1,179.47

Finding the Fourth Proportional to 2,174.21, 3,000.38 and 1,179.47

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Solution

The fourth proportional to 2,174.21, 3,000.38 and 1,179.47 is: 1,627.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.21 : 3,000.38 = 1,179.47 : x
  2. Step 2: Convert to fraction form
    2,174.21/3,000.38 = 1,179.47/x
  3. Step 3: Cross multiply
    2,174.21x = 3,000.38 × 1,179.47
  4. Step 4: Simplify right side
    2,174.21x = 3,538,858.20
  5. Step 5: Solve for x
    x = 3,538,858.20/2,174.21
  6. Step 6: Final answer
    x = 1,627.65

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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.