Home / 2,921.70-4,031.97-1,662.85

Finding the Fourth Proportional to 2,921.70, 4,031.97 and 1,662.85

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Solution

The fourth proportional to 2,921.70, 4,031.97 and 1,662.85 is: 2,294.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.70 : 4,031.97 = 1,662.85 : x
  2. Step 2: Convert to fraction form
    2,921.70/4,031.97 = 1,662.85/x
  3. Step 3: Cross multiply
    2,921.70x = 4,031.97 × 1,662.85
  4. Step 4: Simplify right side
    2,921.70x = 6,704,561.62
  5. Step 5: Solve for x
    x = 6,704,561.62/2,921.70
  6. Step 6: Final answer
    x = 2,294.75

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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.