Home / 2,122.70-3,181.32-1,712.06

Finding the Fourth Proportional to 2,122.70, 3,181.32 and 1,712.06

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Solution

The fourth proportional to 2,122.70, 3,181.32 and 1,712.06 is: 2,565.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.70 : 3,181.32 = 1,712.06 : x
  2. Step 2: Convert to fraction form
    2,122.70/3,181.32 = 1,712.06/x
  3. Step 3: Cross multiply
    2,122.70x = 3,181.32 × 1,712.06
  4. Step 4: Simplify right side
    2,122.70x = 5,446,610.72
  5. Step 5: Solve for x
    x = 5,446,610.72/2,122.70
  6. Step 6: Final answer
    x = 2,565.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.