Home / 4,190.80-6,287.38-3,418.11

Finding the Fourth Proportional to 4,190.80, 6,287.38 and 3,418.11

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Solution

The fourth proportional to 4,190.80, 6,287.38 and 3,418.11 is: 5,128.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,190.80 : 6,287.38 = 3,418.11 : x
  2. Step 2: Convert to fraction form
    4,190.80/6,287.38 = 3,418.11/x
  3. Step 3: Cross multiply
    4,190.80x = 6,287.38 × 3,418.11
  4. Step 4: Simplify right side
    4,190.80x = 21,490,956.45
  5. Step 5: Solve for x
    x = 21,490,956.45/4,190.80
  6. Step 6: Final answer
    x = 5,128.13

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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.