Home / 3,418.12-5,126.10-1,078.03

Finding the Fourth Proportional to 3,418.12, 5,126.10 and 1,078.03

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Solution

The fourth proportional to 3,418.12, 5,126.10 and 1,078.03 is: 1,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.12 : 5,126.10 = 1,078.03 : x
  2. Step 2: Convert to fraction form
    3,418.12/5,126.10 = 1,078.03/x
  3. Step 3: Cross multiply
    3,418.12x = 5,126.10 × 1,078.03
  4. Step 4: Simplify right side
    3,418.12x = 5,526,089.58
  5. Step 5: Solve for x
    x = 5,526,089.58/3,418.12
  6. Step 6: Final answer
    x = 1,616.70

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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.