Home / 2,161.83-2,983.35-1,217.44

Finding the Fourth Proportional to 2,161.83, 2,983.35 and 1,217.44

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Solution

The fourth proportional to 2,161.83, 2,983.35 and 1,217.44 is: 1,680.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,161.83 : 2,983.35 = 1,217.44 : x
  2. Step 2: Convert to fraction form
    2,161.83/2,983.35 = 1,217.44/x
  3. Step 3: Cross multiply
    2,161.83x = 2,983.35 × 1,217.44
  4. Step 4: Simplify right side
    2,161.83x = 3,632,049.62
  5. Step 5: Solve for x
    x = 3,632,049.62/2,161.83
  6. Step 6: Final answer
    x = 1,680.08

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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.