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Finding the Fourth Proportional to 3,369, 5,050.22 and 1,420.04

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Solution

The fourth proportional to 3,369, 5,050.22 and 1,420.04 is: 2,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,369 : 5,050.22 = 1,420.04 : x
  2. Step 2: Convert to fraction form
    3,369/5,050.22 = 1,420.04/x
  3. Step 3: Cross multiply
    3,369x = 5,050.22 × 1,420.04
  4. Step 4: Simplify right side
    3,369x = 7,171,514.41
  5. Step 5: Solve for x
    x = 7,171,514.41/3,369
  6. Step 6: Final answer
    x = 2,128.68

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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.