Home / 3,605.90-5,408.85-2,785.37

Finding the Fourth Proportional to 3,605.90, 5,408.85 and 2,785.37

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Solution

The fourth proportional to 3,605.90, 5,408.85 and 2,785.37 is: 4,178.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.90 : 5,408.85 = 2,785.37 : x
  2. Step 2: Convert to fraction form
    3,605.90/5,408.85 = 2,785.37/x
  3. Step 3: Cross multiply
    3,605.90x = 5,408.85 × 2,785.37
  4. Step 4: Simplify right side
    3,605.90x = 15,065,621.48
  5. Step 5: Solve for x
    x = 15,065,621.48/3,605.90
  6. Step 6: Final answer
    x = 4,178.05

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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.