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Finding the Fourth Proportional to 3,572.81, 5,360.16 and 1,351.68

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Solution

The fourth proportional to 3,572.81, 5,360.16 and 1,351.68 is: 2,027.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.81 : 5,360.16 = 1,351.68 : x
  2. Step 2: Convert to fraction form
    3,572.81/5,360.16 = 1,351.68/x
  3. Step 3: Cross multiply
    3,572.81x = 5,360.16 × 1,351.68
  4. Step 4: Simplify right side
    3,572.81x = 7,245,221.07
  5. Step 5: Solve for x
    x = 7,245,221.07/3,572.81
  6. Step 6: Final answer
    x = 2,027.88

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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.