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Finding the Fourth Proportional to 3,658.36, 5,488.12 and 1,578.96

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Solution

The fourth proportional to 3,658.36, 5,488.12 and 1,578.96 is: 2,368.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.36 : 5,488.12 = 1,578.96 : x
  2. Step 2: Convert to fraction form
    3,658.36/5,488.12 = 1,578.96/x
  3. Step 3: Cross multiply
    3,658.36x = 5,488.12 × 1,578.96
  4. Step 4: Simplify right side
    3,658.36x = 8,665,521.96
  5. Step 5: Solve for x
    x = 8,665,521.96/3,658.36
  6. Step 6: Final answer
    x = 2,368.69

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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.