Home / 3,100.78-4,279.14-1,703.62

Finding the Fourth Proportional to 3,100.78, 4,279.14 and 1,703.62

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Solution

The fourth proportional to 3,100.78, 4,279.14 and 1,703.62 is: 2,351.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.78 : 4,279.14 = 1,703.62 : x
  2. Step 2: Convert to fraction form
    3,100.78/4,279.14 = 1,703.62/x
  3. Step 3: Cross multiply
    3,100.78x = 4,279.14 × 1,703.62
  4. Step 4: Simplify right side
    3,100.78x = 7,290,028.49
  5. Step 5: Solve for x
    x = 7,290,028.49/3,100.78
  6. Step 6: Final answer
    x = 2,351.03

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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.