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Finding the Fourth Proportional to 3,568.28, 5,351.82 and 970.64

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Solution

The fourth proportional to 3,568.28, 5,351.82 and 970.64 is: 1,455.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,568.28 : 5,351.82 = 970.64 : x
  2. Step 2: Convert to fraction form
    3,568.28/5,351.82 = 970.64/x
  3. Step 3: Cross multiply
    3,568.28x = 5,351.82 × 970.64
  4. Step 4: Simplify right side
    3,568.28x = 5,194,690.56
  5. Step 5: Solve for x
    x = 5,194,690.56/3,568.28
  6. Step 6: Final answer
    x = 1,455.80

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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.