Home / 3,415.85-5,122.67-1,335.35

Finding the Fourth Proportional to 3,415.85, 5,122.67 and 1,335.35

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Solution

The fourth proportional to 3,415.85, 5,122.67 and 1,335.35 is: 2,002.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.85 : 5,122.67 = 1,335.35 : x
  2. Step 2: Convert to fraction form
    3,415.85/5,122.67 = 1,335.35/x
  3. Step 3: Cross multiply
    3,415.85x = 5,122.67 × 1,335.35
  4. Step 4: Simplify right side
    3,415.85x = 6,840,525.09
  5. Step 5: Solve for x
    x = 6,840,525.09/3,415.85
  6. Step 6: Final answer
    x = 2,002.59

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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.