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Finding the Fourth Proportional to 3,660, 5,491.10 and 1,351.52

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Solution

The fourth proportional to 3,660, 5,491.10 and 1,351.52 is: 2,027.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,660 : 5,491.10 = 1,351.52 : x
  2. Step 2: Convert to fraction form
    3,660/5,491.10 = 1,351.52/x
  3. Step 3: Cross multiply
    3,660x = 5,491.10 × 1,351.52
  4. Step 4: Simplify right side
    3,660x = 7,421,331.47
  5. Step 5: Solve for x
    x = 7,421,331.47/3,660
  6. Step 6: Final answer
    x = 2,027.69

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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.