Home / 3,430.62-5,144.85-1,786.28

Finding the Fourth Proportional to 3,430.62, 5,144.85 and 1,786.28

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Solution

The fourth proportional to 3,430.62, 5,144.85 and 1,786.28 is: 2,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,430.62 : 5,144.85 = 1,786.28 : x
  2. Step 2: Convert to fraction form
    3,430.62/5,144.85 = 1,786.28/x
  3. Step 3: Cross multiply
    3,430.62x = 5,144.85 × 1,786.28
  4. Step 4: Simplify right side
    3,430.62x = 9,190,116.93
  5. Step 5: Solve for x
    x = 9,190,116.93/3,430.62
  6. Step 6: Final answer
    x = 2,678.85

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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.