Home / 3,745.79-5,617.05-1,990.37

Finding the Fourth Proportional to 3,745.79, 5,617.05 and 1,990.37

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Solution

The fourth proportional to 3,745.79, 5,617.05 and 1,990.37 is: 2,984.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,745.79 : 5,617.05 = 1,990.37 : x
  2. Step 2: Convert to fraction form
    3,745.79/5,617.05 = 1,990.37/x
  3. Step 3: Cross multiply
    3,745.79x = 5,617.05 × 1,990.37
  4. Step 4: Simplify right side
    3,745.79x = 11,179,979.28
  5. Step 5: Solve for x
    x = 11,179,979.28/3,745.79
  6. Step 6: Final answer
    x = 2,984.68

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1.5x scale

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.