Home / 3,412.80-5,115.87-1,851.39

Finding the Fourth Proportional to 3,412.80, 5,115.87 and 1,851.39

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Solution

The fourth proportional to 3,412.80, 5,115.87 and 1,851.39 is: 2,775.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.80 : 5,115.87 = 1,851.39 : x
  2. Step 2: Convert to fraction form
    3,412.80/5,115.87 = 1,851.39/x
  3. Step 3: Cross multiply
    3,412.80x = 5,115.87 × 1,851.39
  4. Step 4: Simplify right side
    3,412.80x = 9,471,470.56
  5. Step 5: Solve for x
    x = 9,471,470.56/3,412.80
  6. Step 6: Final answer
    x = 2,775.28

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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.