Home / 3,137.82-4,330.24-1,721.63

Finding the Fourth Proportional to 3,137.82, 4,330.24 and 1,721.63

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Solution

The fourth proportional to 3,137.82, 4,330.24 and 1,721.63 is: 2,375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.82 : 4,330.24 = 1,721.63 : x
  2. Step 2: Convert to fraction form
    3,137.82/4,330.24 = 1,721.63/x
  3. Step 3: Cross multiply
    3,137.82x = 4,330.24 × 1,721.63
  4. Step 4: Simplify right side
    3,137.82x = 7,455,071.09
  5. Step 5: Solve for x
    x = 7,455,071.09/3,137.82
  6. Step 6: Final answer
    x = 2,375.88

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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.