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Finding the Fourth Proportional to 3,453.74, 5,181.42 and 1,373.87

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Solution

The fourth proportional to 3,453.74, 5,181.42 and 1,373.87 is: 2,061.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,453.74 : 5,181.42 = 1,373.87 : x
  2. Step 2: Convert to fraction form
    3,453.74/5,181.42 = 1,373.87/x
  3. Step 3: Cross multiply
    3,453.74x = 5,181.42 × 1,373.87
  4. Step 4: Simplify right side
    3,453.74x = 7,118,580.14
  5. Step 5: Solve for x
    x = 7,118,580.14/3,453.74
  6. Step 6: Final answer
    x = 2,061.12

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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.