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Finding the Fourth Proportional to 3,399, 5,103.20 and 2,430.60

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Solution

The fourth proportional to 3,399, 5,103.20 and 2,430.60 is: 3,649.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399 : 5,103.20 = 2,430.60 : x
  2. Step 2: Convert to fraction form
    3,399/5,103.20 = 2,430.60/x
  3. Step 3: Cross multiply
    3,399x = 5,103.20 × 2,430.60
  4. Step 4: Simplify right side
    3,399x = 12,403,837.92
  5. Step 5: Solve for x
    x = 12,403,837.92/3,399
  6. Step 6: Final answer
    x = 3,649.26

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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.