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Finding the Fourth Proportional to 3,709.69, 5,570.11 and 3,531.36

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Solution

The fourth proportional to 3,709.69, 5,570.11 and 3,531.36 is: 5,302.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,709.69 : 5,570.11 = 3,531.36 : x
  2. Step 2: Convert to fraction form
    3,709.69/5,570.11 = 3,531.36/x
  3. Step 3: Cross multiply
    3,709.69x = 5,570.11 × 3,531.36
  4. Step 4: Simplify right side
    3,709.69x = 19,670,040.90
  5. Step 5: Solve for x
    x = 19,670,040.90/3,709.69
  6. Step 6: Final answer
    x = 5,302.34

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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.