Home / 2,072.13-3,108.30-611.43

Finding the Fourth Proportional to 2,072.13, 3,108.30 and 611.43

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Solution

The fourth proportional to 2,072.13, 3,108.30 and 611.43 is: 917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.13 : 3,108.30 = 611.43 : x
  2. Step 2: Convert to fraction form
    2,072.13/3,108.30 = 611.43/x
  3. Step 3: Cross multiply
    2,072.13x = 3,108.30 × 611.43
  4. Step 4: Simplify right side
    2,072.13x = 1,900,507.87
  5. Step 5: Solve for x
    x = 1,900,507.87/2,072.13
  6. Step 6: Final answer
    x = 917.18

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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.