Home / 2,102.11-2,900.72-1,217.97

Finding the Fourth Proportional to 2,102.11, 2,900.72 and 1,217.97

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Solution

The fourth proportional to 2,102.11, 2,900.72 and 1,217.97 is: 1,680.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.11 : 2,900.72 = 1,217.97 : x
  2. Step 2: Convert to fraction form
    2,102.11/2,900.72 = 1,217.97/x
  3. Step 3: Cross multiply
    2,102.11x = 2,900.72 × 1,217.97
  4. Step 4: Simplify right side
    2,102.11x = 3,532,992.98
  5. Step 5: Solve for x
    x = 3,532,992.98/2,102.11
  6. Step 6: Final answer
    x = 1,680.69

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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.