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Finding the Fourth Proportional to 2,751.69, 4,129.58 and 1,713.21

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Solution

The fourth proportional to 2,751.69, 4,129.58 and 1,713.21 is: 2,571.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.69 : 4,129.58 = 1,713.21 : x
  2. Step 2: Convert to fraction form
    2,751.69/4,129.58 = 1,713.21/x
  3. Step 3: Cross multiply
    2,751.69x = 4,129.58 × 1,713.21
  4. Step 4: Simplify right side
    2,751.69x = 7,074,837.75
  5. Step 5: Solve for x
    x = 7,074,837.75/2,751.69
  6. Step 6: Final answer
    x = 2,571.09

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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.