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Finding the Fourth Proportional to 3,576.16, 5,363.42 and 979.30

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Solution

The fourth proportional to 3,576.16, 5,363.42 and 979.30 is: 1,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,576.16 : 5,363.42 = 979.30 : x
  2. Step 2: Convert to fraction form
    3,576.16/5,363.42 = 979.30/x
  3. Step 3: Cross multiply
    3,576.16x = 5,363.42 × 979.30
  4. Step 4: Simplify right side
    3,576.16x = 5,252,397.21
  5. Step 5: Solve for x
    x = 5,252,397.21/3,576.16
  6. Step 6: Final answer
    x = 1,468.73

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.