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Finding the Fourth Proportional to 3,568.86, 5,353.74 and 1,379.52

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Solution

The fourth proportional to 3,568.86, 5,353.74 and 1,379.52 is: 2,069.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,568.86 : 5,353.74 = 1,379.52 : x
  2. Step 2: Convert to fraction form
    3,568.86/5,353.74 = 1,379.52/x
  3. Step 3: Cross multiply
    3,568.86x = 5,353.74 × 1,379.52
  4. Step 4: Simplify right side
    3,568.86x = 7,385,591.40
  5. Step 5: Solve for x
    x = 7,385,591.40/3,568.86
  6. Step 6: Final answer
    x = 2,069.45

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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.