Home / 3,412.29-5,115.20-1,333.63

Finding the Fourth Proportional to 3,412.29, 5,115.20 and 1,333.63

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Solution

The fourth proportional to 3,412.29, 5,115.20 and 1,333.63 is: 1,999.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.29 : 5,115.20 = 1,333.63 : x
  2. Step 2: Convert to fraction form
    3,412.29/5,115.20 = 1,333.63/x
  3. Step 3: Cross multiply
    3,412.29x = 5,115.20 × 1,333.63
  4. Step 4: Simplify right side
    3,412.29x = 6,821,784.18
  5. Step 5: Solve for x
    x = 6,821,784.18/3,412.29
  6. Step 6: Final answer
    x = 1,999.18

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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.