Home / 2,072.20-3,108.42-839.58

Finding the Fourth Proportional to 2,072.20, 3,108.42 and 839.58

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Solution

The fourth proportional to 2,072.20, 3,108.42 and 839.58 is: 1,259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.20 : 3,108.42 = 839.58 : x
  2. Step 2: Convert to fraction form
    2,072.20/3,108.42 = 839.58/x
  3. Step 3: Cross multiply
    2,072.20x = 3,108.42 × 839.58
  4. Step 4: Simplify right side
    2,072.20x = 2,609,767.26
  5. Step 5: Solve for x
    x = 2,609,767.26/2,072.20
  6. Step 6: Final answer
    x = 1,259.42

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1.5x scale

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.