Home / 3,428.06-5,139-1,235.26

Finding the Fourth Proportional to 3,428.06, 5,139 and 1,235.26

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Solution

The fourth proportional to 3,428.06, 5,139 and 1,235.26 is: 1,851.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.06 : 5,139 = 1,235.26 : x
  2. Step 2: Convert to fraction form
    3,428.06/5,139 = 1,235.26/x
  3. Step 3: Cross multiply
    3,428.06x = 5,139 × 1,235.26
  4. Step 4: Simplify right side
    3,428.06x = 6,348,001.14
  5. Step 5: Solve for x
    x = 6,348,001.14/3,428.06
  6. Step 6: Final answer
    x = 1,851.78

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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.