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Finding the Fourth Proportional to 3,421.44, 5,132.16 and 1,368

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Solution

The fourth proportional to 3,421.44, 5,132.16 and 1,368 is: 2,052

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.44 : 5,132.16 = 1,368 : x
  2. Step 2: Convert to fraction form
    3,421.44/5,132.16 = 1,368/x
  3. Step 3: Cross multiply
    3,421.44x = 5,132.16 × 1,368
  4. Step 4: Simplify right side
    3,421.44x = 7,020,794.88
  5. Step 5: Solve for x
    x = 7,020,794.88/3,421.44
  6. Step 6: Final answer
    x = 2,052

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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.