Home / 2,171.67-3,261.62-1,355.66

Finding the Fourth Proportional to 2,171.67, 3,261.62 and 1,355.66

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Solution

The fourth proportional to 2,171.67, 3,261.62 and 1,355.66 is: 2,036.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,171.67 : 3,261.62 = 1,355.66 : x
  2. Step 2: Convert to fraction form
    2,171.67/3,261.62 = 1,355.66/x
  3. Step 3: Cross multiply
    2,171.67x = 3,261.62 × 1,355.66
  4. Step 4: Simplify right side
    2,171.67x = 4,421,647.77
  5. Step 5: Solve for x
    x = 4,421,647.77/2,171.67
  6. Step 6: Final answer
    x = 2,036.06

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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.